Huge update with new loader module
Copy non table keys/values if property is a table
Reverted length to totalLayers
Readability tweak
Error check for out of range atlas index
init tmx loading module and friends
Merge branch 'tmxloader' into updates
Remove unused bitop
Internal organization
Added hack for tileoffset
Don't remove slash at beginning
Added opacity hack
Added more to flip note
tmx saver module
Merge branch 'tmxsaver' into updates
Fixed not passing layer index
Fixed not inserting subelements in order
Fixed not using correct firstgid when making tile layer
isomap: Don't align to bottom left
DRY/Align to bottom left fot tmxmaps
Fixed loading layers with different width/height