Initial commit
Trying distanceTransform
Squares recognized and bitmaps found again in image, but it's slow
Added calibration program

During calibration the user will indicate which area of the image is the
scrumboard and will select a part of the scrumboard that will never be
obscured. This selected part will be used to remove color casts by
always correcting it to a shade of grey. Calibration data will be
written to calibrationdata.json
Rewrote background correction program in python

webcam.cpp was removed and has been replaced with scrumboard.py
The intention is to slowly move over functionality from squares.cpp into
scrumboard.py as the application is built up. Currently scrumboard.py
only does color correction based on the color at the location specified
during calibration.
Added calibration of scrumboard columns (todo, busy, etc)
Reorganized code and added outline of algorithm to be implemented
Implemented large part of algorithm