Fixes for the "Check" method including the option to add user agent exceptopms

Added

• Issue 7 - You can add bespoke user agents to a configs file which will allow the "Check" method to pass. This will help in circumstances where bots using uncommon agent strings were failing for one reason or the other.

Fixed

• Issue 6 - Empty user agents now return false.
• In some cases where the user agent version was 0 but the user agent name was corrent, the "check" method would return false. Also, when the version was 0 but the user agent name was incorrect the "check" method would returns true. This mixmatch of rules is now working as expected.

Updated

• Composer dependency versions