Version 0.15.0

version 0.14.0

Version 0.12.0

update changelog

Bump up version 0.10.1

Merge pull request egonSchiele#170 from gsinclair/update_tutorial_con…

…tract_list

Update tutorial builtin contract list

version bump + fix set require

want to keep the README as short as possible.

version 0.7

version bump to 0.5