Remove orange.core.string module.
Remove unit test for typedef.
Remove unused functions from orange.util.collection.Array.
Remove some more D1 specific code.
Remove some unused functions.
Some cleanup.
Remove the orange.core.io module.
Remove the orange.core._ module.
Remove some unused code.
Some cleanup.
Cleanup and remove of unused functions.
Take advantage of default arguments for __LINE__ and __FILE__