Issues of BTFL_SNEAKY_FPV_Default_V1.0.0

[ondrascz]

• "mah" should say "mAh"
• "°f" should say "°F"
• "°c" should say "°C"
• "kph" should say "km/h"
• RPM symbol is missing
• pitch angle icon is misleading. It actually shows a rotation in the roll axis. It shouldn't be curved.
• the sun and clouds for altitude might be a bit misleading, but it's just a feeling
• the home icons should be different. The one on the first row is rendered instead of home arrow if the craft is at the home point. The one on the second row is rendered as a symbol of home distance.
• I have quite a problem with latitude and longitude icons. The latitude lines are parallel to equator, the line on the icon is horizontal, but the arrows at the end of the line shows more how longitude is being measured. I'd recommend to swap the icons or remove the pointy ends.
• The outer antialiasing must be removed. HDZERO has not an alpha channel, only RGB 127,127,127 pixels are fully transparent, all other are fully opaque.