Version 0.2.8

Version 0.2.7

Version 0.2.6

Version 0.2.5

Version 0.2.4

Version 0.2.3

Version 0.2.2

Version 0.2.1, unary  /- from @danabr

Version 0.2.0

Ignore unused functions for now.

Various combinations of the warnings that were output by `rebar3
dialyzer` in a `dialyzer.ignore-warnings` file weren't working for me,
will revisit later and happy to hear about what I might have missed or a
PR solving it a better way.