progress on assignment
added ambiguities
tweaked assignT3.py
Typing for print, println, and for loop
Fix bug in typing for For loop
Add checkAmbiguity()
Updated names of all tests to end with some number.
Added return expression typing resolution.
Fixed return typing. Started Callable typing (INCOMPLETE).
Added callable tests and callable typing.

Have not tested, since rebase required.
Callable passes simple tests now. Fully coded.

Added tiny fix to return type resolution.
buffed testing script
Miscellaneous fixes and updated tests/scripts.