FIXED: Issue #21 (Custom JRE system deleted)
Finished Modpack module, but not implemented yet.

ADDED: ModuleLoader class which loads all modules installed.
ADDED: Author to ModPack class.
ADDED: A new engine to Downloader class.
FINISHED: ModPackModule.
FIXED: Some minimal bugs in Profiler, Debug and DownloadJob classes.
UPDATED: .gitignore