Added code to scan mods directory
Created Mod class
Started rewriting loaders to use ZIP or dirs
Updated loaders to use new API
Updated ResourceManager with new API
Created foundation for ZippedResourceManager
Finished ZippedResourceManager
Completed changes to Engine class
Loader works, but not when in JAR
Made JAR loading not immediately crash
Fixed JAR resource loading
Created ContentPack class
Moved ResourceManager to ContentLoader
Created ContentManifest class
Switched ContentLoaders to use ContentManifest
Finished ContentPack class
Began modularizing ContentLoader
Created content package and Mergeable interface
Added plans for ContentLoader
Added methods to load index definitions