Add phpunit to require-dev
Improve coverage (MailerTest) and fix typo
Remove sendVerificationEmail() and sendPasswordRequestEmail() (Refactoring)
Improve coverage (UserRegistrationServiceTest)
Revert "Remove sendVerificationEmail() and sendPasswordRequestEmail() (Refactoring)"

This reverts commit f669f6e26f9f0fa5949cd2eb2393088e786f010c.
Improve coverage (UserRegistrationFactoryTest)
Improve coverage (EmailVerificationFactoryTest)
Move tests to correct directory
Fix namespaces
Improve coverage (EmailVerificationTest)
Merge pull request #17 from wuethrich44/unit_test

Improve coverage