Add new function getEntityByProp
Add example documentation to `me.state.change()`
Move metatiles32x32.psd to a new directory.
Minor change to another doc comment.
Update Makefile to work on Windows
Merge pull request #183 from DblK/getEntityByProp

Add new function getEntityByProp
Merge pull request #185 from DblK/makefile

Update Makefile to work on Windows