Split FavorModifier by which cop they describe
Use #subject
Match spec offence messages with literal strings
Always name the subject ":cop"
Use #described_class where possible
Describe specs with one line
Use described_class, describe spec with one line
Merge pull request #522 from bquorning/refactor-specs

Refactor specs
[Fix #528] Allow return with multiple return values
[Fix #527] Handle != expressions in EvenOdd cop
Refactor a bit Semicolon cop
[Fix #524] Allow semicolon as a statement separator
Make SignalException find raise not only in begin sections.