5.0 Ammended numeric zip-from/to search to use ints and BETWEEN logic
    Changed free shipping logic to allow items to be included in calculations even if marked as free shipping
    Changed setconditionname to stop conflict with tablerates5.0.3  - COMMON-38 Fixed issue with wrong CSV exporting when MatrixRate is installed
5.1  - COMMON-48 Resolved issue with exporting after applying Magento patch SUPEE-6285
5.1.1  - Removed Logger
5.1.2  - WSA16-28 Alterations suggested by Magento code sniffer. Changed to not use  super global
