__getattr__, __setattr__, proxies testlet, div. new aliases, e.g. clear

Div fixes and enhancements, issues 120, 122, 123

Fix for issue TranscryptOrg#118: Unexpected indent when rebuilding

Bug fix release for Athens

Truthyness conversion of class instances fixed (issue TranscryptOrg#110)

Fix to enable numscrypt development (2)

Library cmath added + autotest cases

Announced Transcrypt tag on StackOverflow(2)

iterators, generators, first move to es 6 support, improved exception…

…s, node bug fixed

Fixes for issue 50 and 51