Remove unused use statements
Fix CS
Merge pull request #133 from aderuwe/patch-6

Bit of cleaning up in the Common namespace
Added MD5 hash secret parameter for Authorize.Net SIM. Closes #131 Closes #134
Add TargetPay gateway. Closes #132
Add MultiSafepay to composer.json keywords
Merge pull request #136 from aderuwe/patch-7

Add MultiSafepay to composer.json keywords