When a Buckaroo payment's invoice number was set to 'null' the payment would fail.
Incremented version number
Back to WordPress Coding Standards optimizations.
WordPress Coding Standards optimizations.
WordPress Coding Standards optimizations.
Added unit tests for Buckaroo.
Renamed some utility functions.
Use empty() function.
Removed unused transaction reference variable.
Improved Buckaroo support.
Updated to version 2.4.2.
Merge branch 'release/2.4.2'