Renamed entitysystem to entity_system
Clean up Cache related code
Boolean core_ext
Namespaced ruby based moon classes/modules
Cleared old modules
Added core/sprite.rb
Documentation stubs for core classes
Added CacheBase

It was included in the core/load but never committed
Added specs

No, you can't run it with rspec, the script must be launched from the spec directory.
script = run_specs
Use %s for cstr
Rewind to stable mruby
Cleaned up vector casting code
Transform: use %s for cstr
Code gardening