selene v0.4.1

Some bug fixes in the RenderBatch2D.

CHANGELOG:

• RenderBatch2D
  • Fixed a crash in the draw_text function. The problem was caused by pointing to the batch buffer data variable before resizing it with realloc, so the pointer points to the old reference.
  • Changed the behaviour of the set_clip_rect command.
  • Using lua_isnumber instead of lua_isinteger in the fill_rect function, it was causing redering issues