Release 2.8.0 - revamped animation engine

[megamarc]

Release 2.8.4 with following improvements:

• Deprecates old TLN_SetLayer() that required passing a NULL tileset, and replaces with new TLN_SetLayerTilemap() that just requires the tilemap
  
• TLN_SetLoadPath() not needed anymore: chain loading of resources being loaded from subdirectories (.tmx -> .tsx -> png)
  
• TLN_DrawFrame(): frame parameter can be always 0, in that case it auto-increments internally. Application doesn't need to keep track of frames just to make the animation engine work.
  
• Updates many samples to use current features, making them easier to follow
  

So this now works:

Code:

TLN_Tilemap tilemap = TLN_LoadTilemap("path/to/asset/tilemap.tmx", "layer");
TLN_SetLayerTilemap(0, tilemap);