Merge pull request #9 from Nebulai/master

Added multi-layer calibration. Also improved Ratio Check function.
Set default noice reduction, hides warp window on start, updates exposure trackbar when exposure changes
Moved static lables to variables and defines
Made exposure trackbar follow current exposure even if it was updated from elsewhere
Added helper functions for transforming dots to arbirtrary resolution and to draw detection pattern
Renamed MAX_POINTS to DD_MAX_DOTS. Warning\! This is a breaking change\!
Added descriptions for ddhelper-functions and made it possible to opt out of SDL2 dependency
Renamed SEND_BUF_SIZE to DD_SEND_BUF_SIZE. Warning\! This is a breaking change\!
Merge pull request #2 from FireArrow/master

Pull before multithreading destroys everything