Added the produced MailResult to the MailEvent
Fixed typehint error
Added tests for MailResult injection in MailEvent
Marked MailResult::getResult() as deprecated, suggesting to use the isValid method instead
Merge branch 'feature/61' into develop
Created module exceptions
Updated MailService to catch and handle any Zend\Mail exception and rethrow any other exception
Enhanced MailServiceTest
Merge branch 'bugfix/62' into develop
Merge branch 'develop'
Enhanced documentation telling how events and exceptions are handled
Merge branch 'develop'