Add and use pstdint.h
Some C89 compatibility
Make sure we can draw hashes when sizeof(long) == 4
Separate internal and user exposed doctest testmod and expose verbosity and optionflags options (todo: all doctest options instead of unittest?) (issue #190)
Add test for pstdint.h
Add harder bitwise op tests
Add harder binaryop tests
Add prototype for method overriding from Python
Fix bitwise operators in loops (issue #192)
Enhance testrunner to make it more customizable
Create 'broken_issues' subpackage and move issue #192 to seperate issue test