slight changes to camera config
added ability to mirror the camera input
changed way pixels are converted to motor steps. also calibration settings are saved to ini file. Needs testing
fixed bug which resulted in dividing by zero
Serial port settings are now saved
slight fixes
refactored out repeated code
added 'tags' file to .gitignore
slight bug fixes to the way movement is calculated and the way buttons are updated
fixed movement direction bugs. added simple crosshairs workaround
actually implemented saving of serial settings
change default window size