new features
- Darwin on ARM platform support, using SAP NW RFC SDK 7.50.11
- New API methods
- Language codes conversion, iso to sap and vice versa: `pyrfc.language_iso_to_sap()` and `pyrfc.language_sap_to_iso()`
- sapnwrfc.ini file reload: `pyrfc.reload_ini_file()`
build tools
- Build scripts update, for Windows and Linux/Mac