TODO

HIGH
Check indexes in thermal folder
Check indexes in colored tracklogs
Clean up heirarchical altitude marks
Clean up global styles
Use built-in biset method instead of find_first_ge

MEDIUM
Competition points
Aerial tour
Allow override of photo time
Add comments
Add nice thermal and glide icons
Add graphs and tracks of other variables (e.g. airspeed)
Add competition task support
Clean up air speed track (average)
Improve drift/windspeed algorithm
Graphical thermal analysis
Chart for colored by time

LOW
Support Aircotec TNC files
Determine thermal efficiency in global context
Determine overall competition/XC efficiency (efficient moves are towards glideslope to goal)
Add competition efficiency
Add competition folder
Optimise salient algorithm (remove monotonic sequences)