Track test coverage

[dentarg]

Free for open source, https://coveralls.io/pricing

Coveralls is and will always be free for open source projects. You can always add a subscription to get coverage reports on private repos later.

Setup inspiration at https://github.com/sporkmonger/addressable/blob/295d7baec1281976434e9061b8065979b3f38c83/spec/spec_helper.rb

[dentarg]

Example of usefulness: sporkmonger/addressable#232

[dentarg]

I created a connection between @twingly-mob and Coveralls and it looked like this:

[dentarg]

Another service: https://codecov.io/

[dentarg]

Library: https://github.com/square/cane

[dentarg]

Service: https://www.codacy.com/

[dentarg]

• https://www.ruby-lang.org/en/news/2017/12/25/ruby-2-5-0-released/
• https://bugs.ruby-lang.org/issues/13901
• https://github.com/deep-cover/deep-cover

[dentarg]

From #87:

Interesting? https://www.relishapp.com/rspec/rspec-core/v/3-5/docs/running-specs-multiple-times-with-different-runner-options-in-the-same-process

Also see this comment about our rspec setup that might be a little bit special: #87 (comment)