Add exhaustive case matcher

[peterfication]

Can be used by including Ruby::Enum::Ecase in an enum class. It will add a method called ecase that can be used to simulate a case statement that will raise an error if a case/enum value is not handled.

Fixes#42

[peterfication]

@dblock here you go :)

[dblock]

Very close! I left a bunch of comments/questions, take a look.

[peterfication]

Thanks a lot for the deep review and your comments! I appreciate it :)

[dblock]

Make rubocop happy and we're good to go! Much thanks.

[dblock]

Oh and since it's a new feature, increment the version to 0.10.0 in this PR. I also wonder whether it's time for Ruby::Enum to graduate to 1.0. That works for me too, your call!

[peterfication]

Rubocop is failing on master. Hence, I will make the Rubocop adjustments in a separate commit.

[peterfication]

I had to disable and ignore some Rubocop rules. See the Rubocop related commit. I wanted to make as little changes as possible in that commit.

[peterfication]

I feel like it's a good idea to release a 1.0.0 version as it has been proven stable.

Note: the 0.9.1 version has not been tagged or released to Ruby gems yet.

[peterfication]

But maybe it makes sense to wait for #41 for the 1.0.0 release.

[dblock]

For Rubocop, you can remove any of the manual disable and the new rules and just run rubocop -a ; rubocop --auto-gen-config, but what you have here works fine too.

[dblock]

But maybe it makes sense to wait for #41 for the 1.0.0 release.

Are you going to take it up? :) Please!

[peterfication]

Are you going to take it up? :) Please!

I might give it a try next week.

[dblock]

Great work @peterfication! Want to help comantain ruby-enum? Drop me your rubygems username to dblock at dblock dot org!