Updated C2

Merge pull request #13 from mensler/validator-c2-update

Added method 3 to validator C2, fixes #12

Updated B1, added E4

• Updated validator B1 with new method, fixes bav-php#33
• Added new validator E4, fixes bav-php#34

Update 74, fixed tests

• Added variant two to validator 74, fixes bav-php#28
• Updated tests and requirement of PHP >= 7

Added E3

1.2.2

Added validator E3

PDODataBackend fixes

Fixes for PDODataBackend:

• Consider database name when checking installation
• Fixed undefined variables $stmt in catch blocks
• Docblock fixes