diff --git a/.gitignore b/.gitignore
index e75c547..733ff52 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,6 +22,7 @@
 /classes
 /dev
 /dist
+/versions
 /tmp
 tmp
 bin
diff --git a/meta/lib/constants.js b/meta/lib/constants.js
deleted file mode 100644
index 5f41af7..0000000
--- a/meta/lib/constants.js
+++ /dev/null
@@ -1,24 +0,0 @@
-"use strict";
-(function(){
-  var c = {};
-  c.modid = "engineersdecor";
-  c.mod_registry_name = function() { return c.modid; }
-  c.local_assets_root = function() { return "src/main/resources/assets/" + c.mod_registry_name(); }
-  c.reference_repository = function() { return "git@github.com:stfwi/engineers-decor.git"; }
-  c.gradle_property_modversion = function() { return "version_engineersdecor"; }
-  c.gradle_property_version_minecraft = function() { return "version_minecraft"; }
-  c.gradle_property_version_forge = function() { return "version_forge"; }
-  c.project_download_inet_page = function() { return "https://www.curseforge.com/minecraft/mc-mods/engineers-decor/"; }
-  c.options = {
-    without_ref_repository_check: true
-  };
-  c.languages = {
-    "en_us": { code:"en_us", name:"English", region:"United States" },
-    "de_de": { code:"de_de", name:"German", region:"Germany" },
-    "ru_ru": { code:"ru_ru", name:"Russian", region:"Russia" },
-    "zh_cn": { code:"zh_cn", name:"Chinese", region:"China" }
-  }
-  Object.freeze(c.languages);
-  Object.freeze(c);
-  return c;
-});
diff --git a/meta/lib/liblang.1.12.js b/meta/lib/liblang.1.12.js
deleted file mode 100644
index 0aafca3..0000000
--- a/meta/lib/liblang.1.12.js
+++ /dev/null
@@ -1,206 +0,0 @@
-"use strict";
-(function(constants){
-  var me = {};
-
-  /**
-   * Loads the raw data of the lang file.
-   * @returns {object}
-   */
-  me.load_raw = function(file_path, remove_comments) {
-    const lang_code = fs.basename(file_path).replace(/\..*$/,"").trim().toLowerCase();
-    var lines = fs.readfile(file_path).trim().split("\n");
-    var was_eol_escape = false;
-    for(var i in lines) {
-      if(was_eol_escape) {
-        var k=0;
-        for(k=i-1; k>=0; --k) {
-          if(lines[k] != null) {
-            lines[k] += "\n" + lines[i];
-            break;
-          }
-        }
-        was_eol_escape = lines[i].match(/[^\\][\\]$/) != null;
-        lines[i] = null;
-      } else {
-        lines[i] = lines[i].trim();
-        was_eol_escape = lines[i].match(/[^\\][\\]$/) != null;
-      }
-    }
-    lines = lines.filter(function(l){return (l!==null)});
-    if(!!remove_comments) lines = lines.filter(function(l){return (l.trim().search(/^#/)!=0)});
-    return { code:lang_code, data:lines };
-  }
-
-  /**
-   * Loads a language into a unified object format
-   */
-  me.load = function(file_path) {
-    const modid = constants.mod_registry_name();
-    const data = {
-      creative_tab: "",
-      config_title: "",
-      blocks: {},
-      items: {},
-      other: {},
-      lang: {},
-      invalid: {}
-    };
-    var lines = me.load_raw(file_path, true).data.map(function(line){return line.replace(/[\s]*[\\][\r]?[\n][\s]*/mig, " ").trim()});
-    for(var i in lines) {
-      if(!lines[i].length) continue;
-      const kv = lines[i].split("=", 2);
-      if(kv.length!=2) throw new Error("Invalid line " + i + " in '"+file_path+"': '"+lines[i]+"'");
-      const key = kv[0].trim();
-      const text = kv[1].trim();
-      text = text.replace("\\\\n", "\n").replace("\\n", "\n");
-      if(key.length == 0) {
-        throw new Error("Empty key in '"+file_path+"' line '" + lines[i] + "'");
-      } else if(key.search("tile."+modid+".")==0) {
-        key = key.replace("tile."+modid+".", "");
-        key = key.split(".", 2);
-        const block = key[0];
-        const prop = key[1];
-        if(data.blocks[block]===undefined) data.blocks[block] = {};
-        data.blocks[block][prop] = text;
-      } else if(key.search("item."+modid+".")==0) {
-        key = key.replace("item."+modid+".", "");
-        key = key.split(".", 2);
-        const item = key[0];
-        const prop = key[1];
-        if(data.items[item]===undefined) data.blocks[item] = {};
-        data.blocks[item][prop] = text;
-      } else if(key.search(modid + ".config.title")==0) {
-        data.config_title = text;
-      } else if(key.search("itemGroup.tab" + modid)==0) {
-        data.creative_tab = text;
-      } else if(key.search(modid + ".")==0) {
-        data.other[key] = text;
-      } else {
-        data.invalid[key] = text;
-      }
-    }
-    const lang_code = fs.basename(file_path).replace(/[\.].*$/, "").trim().toLowerCase();
-    if(constants.languages[lang_code] === undefined) throw new Error("No language header constants defined for '" + lang_code + "'");
-    data.lang = constants.languages[lang_code];
-    return data;
-  }
-
-  /**
-   * Saves a language in the version specific MC format from
-   * a unified object format.
-   */
-  me.save = function(file_path, lang_data) {
-    throw new Error("lang.save() not implemented yet for 1.12 lang files.");
-  }
-
-  /**
-   * Adds missing entries to the language file, master is en_us.
-   * Applies to the CWD and 1.12.2 lang files.
-   * @returns {void}
-   */
-  me.sync_languages = function(reflang_code) {
-    if(reflang_code===undefined) reflang_code = "en_us";
-    reflang_code = reflang_code.trim().toLowerCase();
-    function load() {
-      var lang_data = {};
-      fs.find("./src/main/resources/assets/"+ constants.mod_registry_name() +"/lang", '*.lang', function(f){
-        const r = me.load_raw(f);
-        lang_data[r.code] = r.data;
-        return false;
-      });
-      return lang_data;
-    }
-    function reference_content(lang_data, reflang_code) {
-      var lang_lines = [];
-      for(var i in lang_data[reflang_code]) {
-        var txt = lang_data[reflang_code][i].trim();
-        if((txt.search(/^#/)>=0) || (txt.search("=")<0)) { lang_lines.push(txt); continue; }; // comment "#" or empty line in the ref lang file
-        var kv = txt.split("=", 2);
-        var key = kv[0].trim();
-        var val = kv[1].trim();
-        var o = {key:key, tr:{}};
-        o.tr[reflang_code] = val;
-        lang_lines.push(o);
-      }
-      delete lang_data[reflang_code];
-      return lang_lines;
-    }
-    function add_language(lang_lines, lang_name, lang_data) {
-      const find_line = function(lines, key) {
-        for(var i in lines) {
-          if((typeof(lines[i]) !== "object")) continue;
-          if(lines[i].key.toLowerCase()==key.toLowerCase()) return i;
-        }
-        return -1;
-      };
-      for(var i in lang_data) {
-        var txt = lang_data[i].trim();
-        if(txt.search(/^#/)>=0) continue;
-        if(txt.search("=")<0) continue;
-        var kv = txt.split("=", 2);
-        var key = kv[0].trim();
-        var val = kv[1].trim();
-        var line_i = find_line(lang_lines, key);
-        if(line_i >= 0) {
-          lang_data[i] = undefined;
-          lang_lines[line_i].tr[lang_name] = val;
-        }
-      }
-      return lang_data;
-    }
-
-    function complete_lang_lines(lang_lines, lang_names, reflang_code) {
-      var lang_outputs = {};
-      for(var i in lang_names) lang_outputs[lang_names[i]] = [];
-      for(var i_line in lang_lines) {
-        var entry = lang_lines[i_line];
-        if(typeof(entry) !== "object") {
-          for(var i in lang_names) lang_outputs[lang_names[i]].push(entry);
-        } else {
-          for(var i in lang_names) {
-            var name = lang_names[i];
-            if(entry.tr[name] !== undefined) {
-              lang_outputs[name].push(entry.key + "=" + entry.tr[name]);
-            } else {
-              var added = entry.key + "=" + entry.tr[reflang_code];
-              if((entry.key.search(/\.tip$/)>0) || (entry.key.search(/\.help$/)>0)) added = "#" + added;
-              lang_outputs[name].push(added);
-              if(added.search(/^#/)<0) print("[warn] Lang: Added default language for missing entry in " + name + ": '" + added + "'");
-            }
-          }
-        }
-      }
-      return lang_outputs;
-    }
-
-    var lang_data = load();
-    var lang_names = Object.keys(lang_data);
-    var lang_lines = reference_content(lang_data, reflang_code);
-    for(var lang_name in lang_data) {
-      lang_data[lang_name] = add_language(lang_lines, lang_name, lang_data[lang_name]);
-      lang_data[lang_name] = lang_data[lang_name].filter(function(l){ return !!l; });
-      if(lang_data[lang_name].length == 0) delete lang_data[lang_name];
-    }
-    var output_data = complete_lang_lines(lang_lines, lang_names, reflang_code);
-    for(var i in output_data) output_data[i] = output_data[i].join("\n") + "\n\n";
-
-    // Remaining lines in lang files (not in the reference lang file)
-    for(var lang_name in lang_data) {
-      for(var i in lang_data[lang_name]) {
-        if(lang_data[lang_name][i].search(/^#/)<0) {
-          var added = "# " + lang_data[lang_name][i].replace(/^[#\s]+/,"");
-          output_data[lang_name] += added + "\n";
-          print("[warn] Lang: Commented out unknown key in " + lang_name + ": '" + added + "'");
-        }
-      }
-    }
-    for(var name in output_data) output_data[name] = output_data[name].trim() + "\n";
-
-    for(var name in output_data) {
-      fs.writefile("./src/main/resources/assets/"+ constants.mod_registry_name() +"/lang/" + name + ".lang", output_data[name]);
-    }
-  };
-
-  Object.freeze(me);
-  return me;
-});
\ No newline at end of file
diff --git a/meta/lib/liblang.1.13.js b/meta/lib/liblang.1.13.js
deleted file mode 100644
index d136998..0000000
--- a/meta/lib/liblang.1.13.js
+++ /dev/null
@@ -1,192 +0,0 @@
-"use strict";
-(function(constants){
-  var me = {};
-
-  const clone = function(o) { return JSON.parse(JSON.stringify(o)); }
-
-  /**
-   * Loads the raw data of the lang file.
-   * @returns {object}
-   */
-  me.load_raw = function(file_path) {
-    const lang_code = fs.basename(file_path).replace(/\..*$/,"").trim().toLowerCase();
-    const data = JSON.parse(fs.readfile(file_path).trim());
-    return { code:lang_code, data:data };
-  }
-
-  /**
-   * Loads
-   */
-  me.load = function(file_path) {
-    const modid = constants.mod_registry_name();
-    const data = {
-      creative_tab: "",
-      config_title: "",
-      blocks: {},
-      items: {},
-      other: {},
-      lang: {},
-      invalid: {}
-    };
-    var lines = me.load_raw(file_path).data;
-    for(var objkey in lines) {
-      const key = objkey.trim();
-      const text = lines[objkey].trim();
-      if(key.length == 0) {
-        throw new Error("Empty key in '"+file_path+"' line '" + lines[i] + "'");
-      } else if(key.search("block."+modid+".")==0) {
-        key = key.replace("block."+modid+".", "");
-        key = key.split(".", 2);
-        const block = key[0];
-        const prop = ((key.length<2) || (key[1]=="")) ? "name" : key[1];
-        if(data.blocks[block]===undefined) data.blocks[block] = {};
-        data.blocks[block][prop] = text;
-      } else if(key.search("item."+modid+".")==0) {
-        key = key.replace("item."+modid+".", "");
-        key = key.split(".", 2);
-        const item = key[0];
-        const prop = ((key.length<2) || (key[1]=="")) ? "name" : key[1];
-        if(data.items[item]===undefined) data.blocks[item] = {};
-        data.blocks[item][prop] = text;
-      } else if(key.search(modid + ".config.title")==0) {
-        data.config_title = text;
-      } else if(key.search("itemGroup.tab" + modid)==0) {
-        data.creative_tab = text;
-      } else if(key.search(modid + ".")==0) {
-        data.other[key] = text;
-      } else if(key.search("language")==0) {
-        key = key.replace("language", "");
-        key = key.split(".", 2);
-        const prop = ((key.length<2) || (key[1]=="")) ? "name" : key[1];
-        data.lang[prop] = text;
-      } else {
-        data.invalid[key] = text;
-      }
-    }
-    return data;
-  }
-
-  /**
-   * Saves a language in the version specific MC format from
-   * a unified object format.
-   */
-  me.save = function(file_path, data) {
-    if(Object.keys(data.invalid).length > 0) throw new Error("Given language data have entries in the marked-invalid data, fix this first.");
-    const modid = constants.mod_registry_name();
-    var out = {};
-    out["language"] = data.lang.name;
-    out["language.code"] = data.lang.code;
-    out["language.region"] = data.lang.region;
-    out["itemGroup.tab" + modid] = data.creative_tab;
-    out[modid+".config.title"] = data.config_title;
-    for(var it in data.other) {
-      out[it] = data.other[it];
-    }
-    for(var blkname in data.blocks) {
-      var blk = data.blocks[blkname];
-      for(var key in blk) {
-        if(key=="name") {
-          out["block."+modid+"."+blkname] = blk[key];
-        } else {
-          out["block."+modid+"."+blkname+"."+key] = blk[key];
-        }
-      }
-    }
-    for(var itemname in data.items) {
-      var item = data.items[itemname];
-      for(var key in item) {
-        if(key=="name") {
-          out["item."+modid+"."+itemname] = item[key];
-        } else {
-          out["item."+modid+"."+itemname+"."+key] = item[key];
-        }
-      }
-    }
-    var txt = JSON.stringify(out,null,1);
-    var file_lang_code = fs.basename(file_path).replace(/\.json/,"");
-    const filename = fs.basename(file_path);
-    if(filename.toLowerCase() != filename) throw new Error("Language files must be completely lowercase.");
-    if(file_lang_code != data.lang.code) throw new Error("File name to save does not contain the language code of the given data.");
-    if(filename.search("\.json$") <= 0) throw new Error("File name to save must be a json file (lowercase).");
-    if(!fs.isdir(fs.dirname(file_path))) throw new Error("File to save: Parent directory does not exist.");
-    fs.writefile(file_path, txt);
-  }
-
-  /**
-   * Adds missing entries to the language file, master is en_us.
-   * Applies to the CWD and 1.12.2 lang files.
-   * @returns {void}
-   */
-  me.sync_languages = function(reflang_code) {
-    const modid = constants.mod_registry_name();
-    if(reflang_code===undefined) reflang_code = "en_us";
-    reflang_code = reflang_code.trim().toLowerCase();
-    function load() {
-      const lang_data = {};
-      fs.find("./src/main/resources/assets/"+ modid +"/lang", '*.json', function(f){
-        const r = me.load_raw(f);
-        lang_data[r.code] = r.data;
-        return false;
-      });
-      return lang_data;
-    }
-    function sync_lang_data(lang_data, reflang_code) {
-      const lang_outputs = clone(lang_data);
-      const reflang = lang_data[reflang_code];
-      for(var name in lang_data) {
-        if(name == reflang_code) continue;
-        const lang = lang_outputs[name];
-        for(var key in reflang) {
-          if(lang[key] === undefined) {
-            lang[key] = clone(reflang[key]);
-            print("[warn] Lang: Added default language for missing entry in " + name + ": '" + key + "'");
-          }
-        }
-        for(var key in lang) {
-          if((reflang[key] === undefined) && (lang[key].search(/^_/)<0)) {
-            lang["_"+key] = lang[key];
-            print("[warn] Lang: Commented out obsolete entry in " + name + ": '" + key + "'");
-          }
-        }
-      }
-      return lang_outputs;
-    }
-
-    const sort_entries = function(data) {
-      data = clone(data);
-      const out = {};
-      const move = function(key) { out[key] = data[key]; data[key] = undefined; delete data[key]; };
-      move("language");
-      move("language.code");
-      move("language.region");
-      move("itemGroup.tab"+modid);
-      move(modid+".config.title");
-      const keys = Object.keys(data);
-      keys.sort(function(a, b) {
-        if((a.search(modid+".config.")==0) && (b.search(modid+".config.")<0) ) return -1;
-        if((b.search(modid+".config.")==0) && (a.search(modid+".config.")<0) ) return +1;
-        if((a.search(modid+".tooltip.")==0) && (b.search(modid+".tooltip.")<0) ) return -1;
-        if((b.search(modid+".tooltip.")==0) && (a.search(modid+".tooltip.")<0) ) return +1;
-        if((a.search("block."+modid+".")==0) && (b.search("block."+modid+".")<0) ) return -1;
-        if((b.search("block."+modid+".")==0) && (a.search("block."+modid+".")<0) ) return +1;
-        if((a.search("item."+modid+".")==0) && (b.search("item."+modid+".")<0) ) return -1;
-        if((b.search("item."+modid+".")==0) && (a.search("item."+modid+".")<0) ) return +1;
-        return (a>b ? 1 : (a<b ? -1 : 0));
-      });
-      for(var i in keys) move(keys[i]);
-      return out;
-    };
-
-    const output_data = sync_lang_data(load(), reflang_code);
-    for(var name in output_data) {
-      var data = sort_entries(output_data[name]);
-      data = JSON.stringify(data, null, 2);
-      fs.writefile("./src/main/resources/assets/" + modid + "/lang/" + name + ".json", data);
-      // print("--------------------------------------------------------------------------------");
-      // print(output_data[name]);
-    }
-  };
-
-  Object.freeze(me);
-  return me;
-});
diff --git a/meta/lib/libtask.js b/meta/lib/libtask.js
deleted file mode 100644
index e045008..0000000
--- a/meta/lib/libtask.js
+++ /dev/null
@@ -1,461 +0,0 @@
-#!/usr/bin/djs
-// Note for reviewers/clones: This file is a auxiliary script for my setup. It's not needed to build the mod.
-"use strict";
-
-(function(constants){
-
-  const note = function() { var args = ["[note]"]; for(var i in arguments) args.push(arguments[i]); print.apply(this, args); }
-  const warn = function() { var args = ["[warn]"]; for(var i in arguments) args.push(arguments[i]); print.apply(this, args); }
-  const pass = function() { var args = ["[pass]"]; for(var i in arguments) args.push(arguments[i]); print.apply(this, args); }
-  const fail = function() { var args = ["[fail]"]; for(var i in arguments) args.push(arguments[i]); print.apply(this, args); }
-  const me = {'tasks':{}, 'parsing':{},'sanatizing':{}};
-
-  /**
-   * Returns the version history as full text from a given file path.
-   * @returns {string}
-   */
-  me.parsing.readme_history_section = function (file_path) {
-    var readme = fs.readfile(file_path);
-    if(!readme) throw new Error("Failed to load readme.md");
-    readme = readme.split(/[\r]?[\n]/);
-    while((readme.length > 0) && readme[0].search(/^## Version history/i)<0) readme.shift();
-    while((readme.length > 0) && readme[0].trim()=="") readme.shift();
-    // version history section
-    if(!readme.length) throw new Error("Version history section not found in readme");
-    readme.shift();
-    var end_of_history = readme.length;
-    for(var i=0; i<readme.length; ++i) if(readme[i].search(/^---/) >= 0) { end_of_history=i; break; }
-    if(end_of_history >= readme.length) throw new Error("Could not find the end-of-history header marker.");
-    // remove empty lines, splitters
-    while(readme.length >= end_of_history) readme.pop();
-    while((readme.length >0) && (readme[readme.length-1].replace(/[\s-]/g,"")=="")) readme.pop();
-    const min_indent = readme
-      .map(function(s){return s.search(/[^\s]/)})
-      .filter(function(e){return e>=0})
-      .reduce(function(acc,e){return (e<acc)?e:acc});
-    if(min_indent > 1) {
-      for(var i in readme) { readme[i] = readme[i].substr(min_indent-2); }
-    }
-    return readme.join("\n");
-  }
-
-  /**
-   * Returns the version history as array of version-text pairs from a given file path.
-   * @returns {array}
-   */
-  me.parsing.readme_changelog = function(file_path) {
-    var readme = me.parsing.readme_history_section(file_path).split(/[\r]?[\n]/);
-    var versions = [];
-    var ver="", txt=[];
-    const addversion = function(){
-      if((ver.length == 0) && (txt.length == 0)) return;
-      if((ver.length > 0) != (txt.length > 0)) throw new Error("Version entry with empty corresponding text.");
-      for(var i in txt) txt[i] = txt[i].trim();
-      for(var i=txt.length-1; i>0; --i) {
-        if((txt[i].length == 0) || (txt[i][0] == '[')) continue;
-        txt[i-1] += " " + txt[i];
-        txt[i] = "";
-      }
-      txt = txt.filter(function(v){return v.length>0;});
-      for(var i in txt) txt[i] = txt[i].replace(/[\s]+/, " ");
-      versions.push({ver:ver,txt:txt});
-    };
-    for(var il in readme) {
-      var line = readme[il];
-      if(line.replace(/[\s-]+/, "").length == 0) {
-        continue; // separator line
-      } if(line.search(/^[\s]*[~-][\s]*v[\d]+[\.][\d]+[\.][\d]/) == 0) {
-        addversion();
-        var is_preversion = (line.search(/^[\s]*[~]/) == 0);
-        ver = line.replace(/^[\s]*[~-][\s]*/,"").replace(/[\s].*$/,"").toLowerCase();
-        txt = [line.replace(ver, " ".repeat(ver.length)).replace(/^[\s]*[~-]/, function(m){ return " ".repeat(m.length); })];
-        if(is_preversion) ver = "~" + ver;
-      } else {
-        txt.push(line);
-      }
-    }
-    addversion();
-    return versions;
-  };
-
-  /**
-   * Returns the versions known from the readme
-   * @returns {array}
-   */
-  me.parsing.readme_versions = function(file_path, no_pre_versions) {
-    var o = me.parsing.readme_changelog(file_path);
-    var versions = [];
-    for(var i in o) versions.push(o[i].ver);
-    if(!no_pre_versions) return versions;
-    versions = versions.filter(function(v){ return v[0]!="~"; });
-    return versions;
-  }
-
-  /**
-   * Returns the gradle.properties settings as key-value plain object.
-   * @returns {object}
-   */
-  me.parsing.gradle_properties = function(file_path) {
-    var lines = fs.readfile(file_path).split(/[\r]?[\n]/);
-    var properties = {};
-    for(var i in lines) {
-      var line = lines[i].trim();
-      if(line.search("#")==0) continue;
-      if(line.search("//")>=0) { line=line.substr(0, line.search("//")).trim(); }
-      if(line.search(/^[a-z][a-z0-9_\.]+[=]/i) < 0) continue;
-      line = line.split("=", 2);
-      properties[line[0].trim()] = line[1].trim();
-    }
-    return properties;
-  }
-
-  /**
-   * Returns an object containing the version data for MC, forge, the
-   * mod, and the combined mod version.
-   */
-  me.parsing.version_data = function() {
-    const properties = me.parsing.gradle_properties("gradle.properties");
-    const version_minecraft = properties[constants.gradle_property_version_minecraft()];
-    const version_forge = properties[constants.gradle_property_version_forge()];
-    const version_mod = properties[constants.gradle_property_modversion()];
-    const combined_version = version_minecraft + "-" + version_mod;
-    return {
-      minecraft: version_minecraft,
-      forge: version_forge,
-      mod: version_mod,
-      combined: combined_version
-    }
-  };
-
-  /**
-   * Changes one tab to two spaces in files with the given extension
-   * recursively found in the current working directory.
-   * @returns {void}
-   */
-  me.sanatizing.tabs_to_spaces = function(extensions) {
-    var file_list = (function() {
-      var ls = [];
-      const ext = extensions;
-      for(var i in ext) ls = ls.concat(fs.find("./src", '*.'+ext[i]));
-      for(var i in ls) ls[i] = ls[i].replace(/\\/g,"/");
-      ls.sort();
-      ls.push("readme.md");
-      return ls;
-    })();
-    for(var file_i in file_list) {
-      var file = file_list[file_i];
-      var txt = fs.readfile(file);
-      if(txt===undefined) throw new Error("Failed to read '" + file + "'");
-      const txt_length = txt.length;
-      txt = txt.replace(/[\t]/g,"  ");
-      const n = txt.length - txt_length;
-      if(n > 0) {
-        print("File '" + file + "': Changed " + n + " tabs to 2 spaces." );
-        fs.writefile(file, txt);
-      }
-    }
-  };
-
-  /**
-   * Removes space characters at the end of lines in files with the given
-   * extension recursively found in the current working directory.
-   * @returns {void}
-   */
-  me.sanatizing.remove_trailing_whitespaces = function(extensions) {
-    var file_list = (function() {
-      var ls = [];
-      const ext = extensions;
-      for(var i in ext) ls = ls.concat(fs.find("./src", '*.'+ext[i]));
-      for(var i in ls) ls[i] = ls[i].replace(/\\/g,"/");
-      ls.sort();
-      ls.push("readme.md");
-      return ls;
-    })();
-    for(var file_i in file_list) {
-      var file = file_list[file_i];
-      var txt = fs.readfile(file);
-      if(txt===undefined) throw new Error("Failed to read '" + file + "'");
-      const txt_length = txt.length;
-      txt = txt.replace(/[\r\t ]+[\n]/g,"\n");
-      const n = txt_length - txt.length;
-      if(n > 0) {
-        print("File '" + file + "': Fixed " + n + " lines with trailing whitespaces." );
-        fs.writefile(file, txt);
-      }
-    }
-  };
-
-  /**
-   * Fixes "\\n" to "\n" in lang json files.
-   */
-  me.sanatizing.lang_json_newline_fixes = function() {
-    var file_list = (function() {
-      var ls = [];
-      const dir = "./" + constants.local_assets_root() + "/lang";
-      if(fs.isdir(dir)) {
-        ls = ls.concat(fs.find(dir, '*.json'));
-        for(var i in ls) ls[i] = ls[i].replace(/\\/g,"/");
-      }
-      ls.sort();
-      return ls;
-    })();
-    for(var file_i in file_list) {
-      var file = file_list[file_i];
-      var txt = fs.readfile(file);
-      if(txt===undefined) throw new Error("Failed to read '" + file + "'");
-      txt = txt.replace(/\\\\n/g,"\\n");
-      fs.writefile(file, txt);
-    }
-  };
-
-  /**
-   * Checks the versions specified in the gradle.properties against
-   * the last readme.md changelog version. Applies to the CWD.
-   * @returns {object}
-   */
-  me.tasks.version_check = function(allow_preversions) {
-    var fails = [];
-    const properties = me.parsing.gradle_properties("gradle.properties");
-    const version_minecraft = properties[constants.gradle_property_version_minecraft()];
-    const version_forge = properties[constants.gradle_property_version_forge()];
-    const version_mod = properties[constants.gradle_property_modversion()];
-    const combined_version = version_minecraft + "-" + version_mod;
-    const readme_versions = me.parsing.readme_versions("readme.md").map(function(v){return v.replace(/^[v]/i, "").trim()});
-    const readme_preversion_found = (readme_versions.filter(function(v){return v==("~v"+version_mod)}).length == 1);
-    var readme_version_found = readme_versions.filter(function(v){return v==version_mod}).length == 1;
-    if(allow_preversions && readme_preversion_found) readme_version_found = true;
-    if(!readme_version_found) fails.push("Version 'v" + version_mod + "' not found in the readme changelog.");
-    return {
-      fails: fails,
-      version_mod: version_mod,
-      combined_version: combined_version,
-      version_forge: version_forge,
-      preversion_found: readme_preversion_found
-    }
-  };
-
-  /**
-   * Distribution JAR pre-checks.
-   * @returns {array}
-   */
-  me.tasks.dist_check = function() {
-    const uncommitted_changes = sys.shell("git status -s").trim();
-    const gittags = sys.shell('git log -1 --format="%D"')
-                    .replace(/[\s]/g,"").split(",")
-                    .filter(function(s){ return s.indexOf("tag:")==0;})
-                    .map(function(s){ return s.replace(/^tag:/,"");});
-    const modversion = fs.readfile("gradle.properties", function(line){
-      if(line.trim().indexOf(constants.gradle_property_modversion())!=0) return false;
-      return line.replace(/^.*?=/,"").trim()
-    }).trim();
-    const mcversion = fs.readfile("gradle.properties", function(line){
-      if(line.trim().indexOf("version_minecraft")!=0) return false;
-      return line.replace(/^.*?=/,"").trim()
-    }).trim();
-    const git_remote = sys.shell("git remote -v").trim();
-    const git_branch = sys.shell("git rev-parse --abbrev-ref HEAD").trim();
-    const git_diff = sys.shell("git diff .").trim();
-    var fails = [];
-    if(modversion=="") fails.push("Could not determine '"+ constants.gradle_property_modversion() +"' from gradle properties.");
-    if(!gittags.length) fails.push("Version not tagged.");
-    const expected_commit_version = modversion.replace(/[-]/g,"") + "-mc" + mcversion;
-    if(!gittags.filter(function(s){return s.indexOf(expected_commit_version)>=0}).length) fails.push("No tag version on this commit matching the gradle properties version (should be v" + expected_commit_version + ").");
-    if(((!constants.options.without_ref_repository_check)) && (git_remote.replace(/[\s]/g,"").indexOf(constants.reference_repository() + "(push)") < 0)) fails.push("Not the reference repository.");
-    //if(git_branch != "develop") fails.push("Not a valid branch for dist. (branch:'"+git_branch+"', must be 'develop')");
-    if(git_diff !== "") fails.push("Not everything committed to the GIT repository.");
-    return fails;
-  };
-
-  /**
-   * Returns a version check object for the given MC version.
-   */
-  me.tasks.changelog_data = function(mc_version) {
-    if(mc_version===undefined) throw new Error("No MC version given for generating an update JSON.");
-    mc_version = (""+mc_version).trim();
-    function read_history() {
-      var readme = fs.readfile(fs.cwd() + "/readme.md");
-      if(!readme) throw new Error("Failed to load readme.md");
-      readme = readme.split(/[\r]?[\n]/);
-      while((readme.length > 0) && readme[0].search(/^## Version history/i)<0) readme.shift();
-      // version history section
-      if(!readme.length) throw new Error("Version history section not found in readme");
-      readme.shift();
-      var end_of_history = readme.length;
-      for(var i=0; i<readme.length; ++i) if(readme[i].search(/^---/) >= 0) { end_of_history=i; break; }
-      if(end_of_history >= readme.length) throw new Error("Could not find the end-of-history header marker.");
-      // remove empty lines, splitters
-      while(readme.length >= end_of_history) readme.pop();
-      for(var i in readme) readme[i] = readme[i].replace(/[\s]+$/g,"").replace(/[\t]/g,"  ");
-      readme = readme.filter(function(a){return a.replace(/[\s-]+/g,"")!="";});
-      // condense multilines to single line entries for each fix or feature. ([A] ... [M] ...)
-      for(var i=readme.length-1; i>0; --i) {
-        var line = readme[i].replace(/^\s+/,"");
-        if(line.search(/^[\[\-]/) < 0) {
-          readme[i-1] += " " + line;
-          readme[i] = "";
-        }
-      }
-      readme = readme.filter(function(a){return a!="";});
-      // Condense log entries sepatated with newlines to one line for each version
-      for(var i=readme.length-1; i>0; --i) {
-        var line = readme[i].replace(/^\s+/,"");
-        if(line.search(/^[-~]/) < 0) {
-          readme[i-1] += "\n" + line;
-          readme[i] = "";
-        }
-      }
-      readme = readme.filter(function(a){return a!="";});
-      // Separate versions.
-      var history = {};
-      for(var i in readme) {
-        var line = readme[i].replace(/^[\sv-]+/g,"").trim();
-        var ver = line.substr(0, line.search(" ")).trim().toLowerCase();
-        var txt = line.substr(line.search(" ")).trim();
-        if(ver.search("~")===0) continue;
-        if(history[ver] !== undefined) throw new Error("Double definition of version '" + ver + "' in the readme version history.");
-        history[ver] = txt;
-      }
-      return history;
-    }
-    var history = read_history();
-    var latest_release = "";
-    var latest_beta = "";
-    for(var ver in history) { latest_beta=ver; break; }
-    for(var ver in history) if(ver.search(/(rc|b|a)/) < 0) { latest_release=ver; break; }
-    if(latest_release=="") latest_release = latest_beta;
-    var update_json = {}
-    update_json["homepage"] = constants.project_download_inet_page();
-    update_json[mc_version] = history;
-    update_json["promos"] = {};
-    update_json["promos"][""+mc_version+"-recommended"] = latest_release;
-    update_json["promos"][""+mc_version+"-latest"] = latest_beta;
-    return update_json;
-  };
-
-  // Standard tasks
-  var stdtasks = {};
-
-  stdtasks["dist-check"] = function() {
-    var fails = me.tasks.dist_check();
-    if(fails.length == 0) return;
-    for(var i in fails) fails[i] = "  - " + fails[i];
-    alert("Dist check failed");
-    alert(fails.join("\n")+"\n");
-    exit(1);
-  };
-  stdtasks["version-check"] = function(args) {
-    var r = me.tasks.version_check(!args.join().search("--no-preversions")>=0);
-    if(r.fails.length == 0) return;
-    alert("Version check failed:");
-    for(var i in r.fails) alert("  - " + r.fails[i]);
-    alert("Version data:");
-    alert(" - version_mod       : '" + r.version_mod + "'");
-    alert(" - combined_version  : '" + r.combined_version + "'");
-    alert(" - version_forge     : '" + r.version_forge + "'");
-    if(!!r.preversion_found) alert(" - PREVERSION FOUND  : '~" + r.version_mod + "'");
-    exit(1);
-  };
-  stdtasks["version-html"] = function() {
-    if(!fs.isdir("dist")) throw new Error("'dist' directory does not exist.");
-    const hist = me.parsing.readme_history_section("readme.md");
-    const version = me.parsing.version_data().combined;
-    const modid = constants.modid;
-    const html = "<pre>\n" + (hist.replace(/&/g, "&amp;").replace(/>/g, "&gt;").replace(/</g, "&lt;")) + "\n</pre>";
-    fs.writefile("dist/" + modid + "-" + version + ".html", html);
-  };
-  stdtasks["sanitize"] = function() {
-    me.sanatizing.remove_trailing_whitespaces(['java','json','lang']);
-    me.sanatizing.tabs_to_spaces(['java','lang']);
-    me.sanatizing.lang_json_newline_fixes();
-  }
-  stdtasks["dist"] = function() {
-    stdtasks["version-html"]();
-  };
-  stdtasks["update-json"] = function() {
-    const version_minecraft = me.parsing.gradle_properties("gradle.properties").version_minecraft;
-    const json = me.tasks.changelog_data(version_minecraft);
-    fs.mkdir("./meta");
-    fs.writefile("./meta/update.json", JSON.stringify(json, null, 2));
-  };
-  stdtasks["dump-languages"] = function() {
-    const lang_version = (me.parsing.gradle_properties("gradle.properties").version_minecraft.search("1.12.")==0) ? "1.12" : "1.13";
-    const lang_extension = (lang_version == "1.12") ? ("lang") : ("json");
-    const liblang = include("../meta/lib/liblang."+lang_version+".js")(constants);
-    var lang_files = {};
-    fs.find("./src/main/resources/assets/"+ constants.mod_registry_name() +"/lang", '*.'+lang_extension, function(f){
-      const code = fs.basename(f).replace(/[\.].*$/,"").trim();
-      const data = liblang.load(f);
-      lang_files[code] = data;
-      return false;
-    });
-    print(JSON.stringify(lang_files,null,1));
-  };
-  stdtasks["datagen"] = function() {
-    sys.exec("gradlew.bat", ["--no-daemon", "runData"]);
-    // double check and really only copy json files.
-    const dst = fs.realpath("src/main/resources/data/" + constants.modid);
-    const src = fs.realpath("src/generated/resources/data/" + constants.modid);
-    if(!dst || !src) throw "Source or destination directory not found.";
-    if(!fs.isdir(src)) return;
-    const src_files = fs.find(src, "*.json");
-    const upath = function(s) { return s.replace(/[\\]/g,"/").replace(/^[\/]/,""); } // for correct display on win32
-    if(src_files===undefined) return 1;
-    for(var i in src_files) {
-      const srcfile = src_files[i];
-      const dstfile = srcfile.replace(src, dst);
-      const dstdir = fs.dirname(dstfile);
-      if(!fs.isdir(dstdir)) fs.mkdir(dstdir);
-      if(!fs.isfile(dstfile)) {
-        print("[copy] ", upath(srcfile.replace(src,"")));
-        fs.copy(srcfile, dstdir);
-      } else if(sys.hash.sha1(srcfile,true) != sys.hash.sha1(dstfile,true)) {
-        print("[edit] ", upath(srcfile.replace(src,"")));
-        fs.unlink(dstfile);
-        fs.copy(srcfile, dstdir);
-      }
-    }
-  };
-  stdtasks["sync-languages"] = function() {
-    const liblang = include( (me.parsing.version_data().minecraft == "1.12.2") ? ("../meta/lib/liblang.1.12.js") : ("../meta/lib/liblang.1.13.js"))(constants);
-    liblang.sync_languages();
-  };
-  stdtasks["install"] = function() {
-  };
-  stdtasks["start-server"] = function() {
-  };
-
-  /**
-   * Task main
-   */
-  me.run = function(tasks, args, no_std_tasks) {
-    const root_dir = fs.realpath(fs.dirname(sys.script)+"/../..");
-    if(!fs.isdir(root_dir+"/.git")) throw new Error("Missing git repository in parent directory of mod source.");
-    if(!no_std_tasks) {
-      for(var key in stdtasks) {
-        if(tasks[key]===undefined) tasks[key] = stdtasks[key];
-      }
-    }
-    const task_name = args[0];
-    var task_args = args.slice(1).map(function(v){return(v===undefined)?(""):(""+v).trim()}).filter(function(v){return(v.length>0)});
-    if(task_name===undefined) {
-      alert("No task specified.");
-      exit(1);
-    } else if((tasks[task_name])===undefined) {
-      alert("No task '" + task_name + "' defined.");
-      exit(1);
-    } else {
-      const pwd = fs.cwd();
-      try {
-        tasks[task_name](task_args);
-      } finally {
-        fs.chdir(pwd);
-      }
-    }
-  };
-
-  // Module include return value
-  Object.freeze(me.parsing);
-  Object.freeze(me.tasks);
-  Object.freeze(me);
-  return me;
-});
diff --git a/meta/lib/tasks.js b/meta/lib/tasks.js
deleted file mode 100644
index ecf41c2..0000000
--- a/meta/lib/tasks.js
+++ /dev/null
@@ -1,83 +0,0 @@
-#!/usr/bin/djs
-"use strict";
-const root_dir = fs.realpath(fs.dirname(sys.script)+"/../..");
-const constants = include(fs.dirname(fs.realpath(sys.script)) + "/constants.js")();
-const libtask = include(fs.dirname(fs.realpath(sys.script)) + "/libtask.js")(constants);
-const modid = constants.mod_registry_name();
-var tasks = {};
-
-tasks["combined-update-json"] = function() {
-  const update_json = {
-    homepage: constants.project_download_inet_page(),
-    promos: {}
-  };
-  var update_json_src = [];
-  fs.find(root_dir + "/1.12/meta/", "update*.json", function(path){ update_json_src.push(JSON.parse(fs.readfile(path))); });
-  fs.find(root_dir + "/1.14/meta/", "update*.json", function(path){ update_json_src.push(JSON.parse(fs.readfile(path))); });
-  fs.find(root_dir + "/1.15/meta/", "update*.json", function(path){ update_json_src.push(JSON.parse(fs.readfile(path))); });
-  for(var i in update_json_src) {
-    const version_update_json = update_json_src[i];
-    for(var key in version_update_json) {
-      if(key=="homepage") {
-        continue;
-      } else if(key=="promos") {
-        for(var prkey in version_update_json.promos) {
-          update_json.promos[prkey] = version_update_json.promos[prkey];
-        }
-      } else {
-        update_json[key] = version_update_json[key];
-      }
-    }
-  }
-  update_json_src = undefined;
-  fs.mkdir(root_dir + "/meta");
-  fs.writefile(root_dir + "/meta/update.json", JSON.stringify(update_json, null, 2));
-};
-
-tasks["sync-main-repository"] = function() {
-  // step-by-step-verbose operations, as the code bases and copy data are different.
-  if((!fs.chdir(fs.dirname(fs.realpath(sys.script))+"/../..")) || (!fs.isdir(".git"))) throw new Error("Failed to switch to mod source directory.");
-  if(sys.shell("git remote -v") != "") throw new Error("Dev repository has a remote set.");
-  if(main_repo_local == "") throw new Error("Main repository (real) path not found.");
-  const test_repo_local = fs.cwd();
-  const main_repo_local = fs.realpath("../"+ constants.mod_registry_name() + "-github");
-  if(main_repo_local == fs.realpath(test_repo_local)) throw new Error("This is already the main repository");
-  const cd_dev = function(subdir) {
-    if((!fs.chdir(test_repo_local)) || (!fs.isdir(".git"))) throw new Error("Failed to switch to mod source directory.");
-    if((subdir!==undefined) && (!fs.chdir(subdir))) throw new Error("Failed to change to '" + subdir + "' of the test repository.");
-  }
-  const cd_main = function(subdir) {
-    if((!fs.chdir(main_repo_local)) || (!fs.isdir(".git"))) throw new Error("Failed to switch to main repository directory.");
-    if(fs.cwd().search("-github") < 0) throw new Error("Main repository is missing the '*-github' tag in the path name.");
-    if((subdir!==undefined) && (!fs.chdir(subdir))) throw new Error("Failed to change to '" + subdir + "' of the main repository.");
-  };
-  cd_main();
-  sys.shell("rm -rf documentation meta");
-  sys.shell("rm -f .gitignore credits.md license Makefile readme.md tasks.js");
-  cd_main("1.12"); sys.shell("rm -rf meta gradle src");
-  cd_main("1.14"); sys.shell("rm -rf meta gradle src");
-  cd_main("1.15"); sys.shell("rm -rf meta gradle src");
-  cd_dev();
-  sys.shell("cp -f .gitignore credits.md license Makefile readme.md tasks.js \"" + main_repo_local + "/\"")
-  sys.shell("cp -r documentation meta \"" + main_repo_local + "/\"")
-  {
-    cd_dev("1.12");
-    sys.shell("cp -f .gitignore build.gradle gradle.properties gradlew gradlew.bat Makefile readme.md tasks.js.* \"" + main_repo_local + "/1.12/\"")
-    sys.shell("cp -r gradle meta src \"" + main_repo_local + "/1.12/\"")
-  }
-  {
-    cd_dev("1.14");
-    sys.shell("cp -f .gitignore build.gradle gradle.properties gradlew gradlew.bat Makefile readme.md tasks.js \"" + main_repo_local + "/1.14/\"")
-    sys.shell("cp -r gradle meta src \"" + main_repo_local + "/1.14/\"")
-  }
-  {
-    cd_dev("1.15");
-    sys.shell("cp -f .gitignore build.gradle gradle.properties gradlew gradlew.bat Makefile readme.md tasks.js \"" + main_repo_local + "/1.15/\"")
-    sys.shell("cp -r gradle meta src \"" + main_repo_local + "/1.15/\"")
-  }
-  cd_main();
-  print("Main repository changes:");
-  print(sys.shell("git status -s"))
-};
-
-libtask.run(tasks, sys.args);