Git tag 0.3.7

Git tag 0.3.6

Git tag 0.3.5

Git tag 0.3.4

Increase version from 0.3.3 to 0.3.4

Increase version from 0.3.2 to 0.3.3

Increase version from 0.3.2 to 0.3.3

Increment package version from 0.3.1 to 0.3.2

- Replaced docs_ghpages dependency with ex_doc
- Update .gitignore
- Update mix.lock

Release v0.3.1

Release v0.3.0