Bump PyPI version to v2.1.5

Bump PyPI version to v2.1.4

Bump verison to 2.1.3

Update readme

Update readmes

Whitespace change

My doctor says I'm getting better.

Add compatibility with new DEX module (#94)

Also,
- rewrite a lot of the code
- add tests
- add travisci integration
- clean up rules

Release v1, update copyrights

Prepare 0.9.4 release