New features:

• Added unsafe OpenFile to Folder and implemented safe one for JDPackage and zip package.
• GetThreadQueue in GPI_Surface.
• New Scheduler implementation.
• Added read_write atomic lock.
• Added initial state for Signal.
• Added atomic_indexed_stack.
• Added CriticalSection.
• Stripped formats from assimp to reduce lib size

Issues Fixed:

• operator[] for vectors now returns const ref.
• Fixed iterator in intrusive list.
• Fixed TextureManager make-power-of-two bug.
• Fixed android incorrect touch sending to destroyed manager.