Update mod list to include 'Odyssey' expansion and bump version to 1.6.4518 rev71

lib/mod_list.dart

@@ -104,6 +104,21 @@ var specialMods = {
     isExpansion: true,
     enabled: true,
   ),
+  'ludeon.rimworld.odyssey': Mod(
+    id: 'ludeon.rimworld.odyssey',
+    name: 'Odyssey',
+    path: '',
+    versions: [],
+    description: 'RimWorld expansion - Odyssey',
+    dependencies: ['ludeon.rimworld'],
+    loadAfter: ['ludeon.rimworld.anomaly'],
+    loadBefore: [],
+    incompatibilities: [],
+    isBaseGame: false,
+    size: 0,
+    isExpansion: true,
+    enabled: true,
+  ),
 };
 
 class ModList {
@@ -295,7 +310,7 @@ class ModList {
         'ModsConfigData',
         nest: () {
           // Add version element
-          builder.element('version', nest: '1.5.4297 rev994');
+          builder.element('version', nest: '1.6.4518 rev71');
 
           // Add active mods element
           builder.element(