Update changelog for version 0.2.2
Update changelog for version 0.2.2

lammertw/GaugeKit,bryanmikaelian/GaugeKit,DrGo/GaugeKit,skywinder/GaugeKit,lammertw/GaugeKit,lammertw/GaugeKit,bryanmikaelian/GaugeKit,mokagio/GaugeKit,mokagio/GaugeKit,DrGo/GaugeKit,bryanmikaelian/GaugeKit,mokagio/GaugeKit,skywinder/GaugeKit