preparation for enum macro
tweak readme to mention Python 3
Enum macro works
fixed a bug in ast_ctx_fixer
fixed license from BSD to MIT
added documentation for Enums
interned[] macro now works
updated docs for Lazy and Interned
upgraded gen_sym to allow name selection
updated lazy and interned doc exampels
updated lazy and interned doc exampels again
updated lazy and interned doc exampels again!
updated setup.py to not package test folders
updated setup.py to not package test folders for real this time
Merge branch 'dev'

Conflicts:
	macropy/__init__.py
	readme.md
formatting of changelog