Hexagonal, isometric and staggered maps support for maps module

Add a tmx loader to map_utils

Add memroy_required attribute to map_system to
control the memory needed for TileMap

and also fix example to use correct system_names

Add animated tiles support to tiled maps

Update 13_tilemap example to include animated tiles

Add map module boilerplate

Revert "2.2 dev"

2.2 dev

2.2 dev

link gl and add extra compile/link args for different platforms

2.2 dev

Fix batching issue in animation update loop

also remove unnecessary update of model uvs

Initial work on cythonized AnimationSystem

Use a constant length frames array for now

Also improve the example to use multiple textures

add ability to register game managers for use by extension modules

Add version number to packages and setup files (2.2 dev)

This way we can prevent kivy from outputting init logs

Missing import statement

Remove unused variable declare statement

Shore up all the bolierplate in setup.py

Eliminate EOL/EOF whitespace

Clean up the module_cymunk docstrings

Fix EOL/EOF whitespace

Eliminate some arbitrary differences between iterations of the example code.

Support passing moment for a body as an init argument

If no moment specified, it is computed as previously done
ref #59

uncaught KeyError in cdefed metchod

New model format

- allow to call Entity.get_component_index from python