Major Overhaul

• Removed all ids as they were not used

• Scenes now have their own priority attribute
• Stages now sort and execute by Scenes, rather then the net Systems in the Scenes
• Component method .attrs was renamed to .to_h
• Renamed the data accessor to ._data
• Various arrays are automatically compacted

• Classes and Modules which used a data array now have the entire set of array methods available to their respective Classes and Modules
• Convenience methods for accessing a single entity in a component(@component.entity) and accessing a single entity in a component(@entity.component[@component_manager])
• FelFlame::Order class which can set the order of your Scenes and Systems

• Replaced all instances of sort_by! with sort_by for compatibility with mruby
• Minor optimizations such as less array duplication