Add coveralls to build
Add coveralls badge
Install coverage at start
Also install coveralls
More badges
Improve test coverage to 100%
Fail the build if test coverage drops
Always push coverage numbers
Merge pull request #22 from matt-thomson/issue20

Add code coverage to build

Closes #20
Add codeq badge
Run autopep8
More formatting fixes
Unused import
Merge pull request #23 from matt-thomson/issue21

Add code quality to build

Closes #21
Remove coveralls test dependency
Prepare for v0.2.2 release
Merge pull request #24 from matt-thomson/v0.2.2-dev

Release v0.2.2.