Merge pull request #75 from differentmatt/master

Fix Python ranges
Added a way to protectedly update builtins outside of user code. Fixed a transpile crash. Added a couple tests. Removed lua2.
Release 0.2.14
Using strict again. Fixed #18.
Release 0.2.15
Further Io integration
Merge pull request #79 from dariusf/io

Further Io integration