v1.2 - primarily patches to fix bugs in v1.1

- capture errors
- refund errors
- added text define to add message to checkout page

files_to_upload/includes/modules/payment/square.php

@@ -29,7 +29,7 @@ class square extends base
  /**
  * $moduleVersion is the plugin version number
  */
- public $moduleVersion = '1.1';
+ public $moduleVersion = '1.2';
  /**
  * $title is the displayed name for this payment method
  *