Stytra

Fixes
- Tile range calculation fix
- The calibrator now shows axis directions and proper positioning of the zebrafish
- Fixes for closed loop stimulus logging
- Windmill drawing moved to the new background framework

Fixes
- Background stimuli reworked: tiling of stimulus works in all cases regardless of transform
- InterpolatedStimulus phase is not assumed to be always increasing anymore (possilbe in some closed-loop configurations)
- frame times for recordings of video feed now get saved

Improvements
- Added documentation
- Added window to monitor stimulus in main GUI

Fixes
- Fixed erratic bug in stimulus updating
- Fixed not working test for tracking

Fixes
- replaced deepdish dependency with flammkuchen (deepdish no longer maintained)

Fixes
- fixes bug for stimulus combiner log

New features
- random dot kinematogram stimulus added
- projector-camera calibration pattern size can be changed from GUI
- fixation cross stimulus added

Improvements
- added custom metadata example
- imporved custom tracking documentation

Fixes
- combined stimuli save metadata correctly