V7.1.2.EU

Required for WiFi V4.x

• Optimisations & clean-up lincomatic#126 lincomatic#127 lincomatic#128 lincomatic#129 lincomatic#132
• Improved energy calculation lincomatic#130
• fix compile error when KWH_RECORDING not defined
• Create event for button press ($AN) when disabled (via $FF B 0). Required for WiFi V4.x
• re-enabled eventing of the 10s WiFi mode press RAPI_WF by default lincomatic#134
• deprecate protocol_version in $GV