Replaced ` with clean degree symbol in standard font & arial 8
Removed temp offset from fuel cal screen
GUI alignment tweaks to avoid cutoffs
Better handling of single DS18B20 with BME280
Added bounds limits to Exponential Mean
Sorted inheritance from CSensor properly
Modded code to only allow single DS18B20 - getting funny ROM SEARCH lock ups...
Set mini temp sample interval to 750ms, as per data sheet for 12bit DS18B20
Returned to compact timer icon, press centre button to see start/stop times in base menus
Version info screen refactored to show available version number
New splash screen now presented upon display for a short time after upload or rename to /splash.bmp