1) Added field "pupilsize" to Datapoint
2) Added new function calculate_pupil_size to calculate pupilsize based on measurementsa of right and left pupils
Features  calculation for a segment affected
Added pupil computing of 6 pupil dilation size featrues (no rest pupil size adjustments taken into account) .
add check if pupil sizes are available for all valid datapoints.
EMDAT raises exception if any missing pupilsizes  for valid datapoints were found
fixed typo in output file name
Updated classes Scene and Segments with calculations of pupil dilaiton.
Segment.py
- added pupil rest size adjustments
- refactored code
Scene.py:
- added calculation of pupil sizes based on values calculated in segments
- added mergevalues()
params.py
- added pupil dilation features to the featurelist
Calculation of rest pupil size in BasicParticipant.
List of updates:
In BasicParticipant
- Fixed minor erors in comments
- Added description of read-participants_Basic
- added rpsfile input variable
- added function read_rest_pupil_sizes
Added all_rest_pupil_sizes.tsv with rest pupil sizes matrix to tracking
Calculation of pupil dilation features are based on rest pupil size.
Finalised export of pupil size related features:
- added plot pupil_dilation_all function (creates a collection of tsv files (1 per participant) with Scene pupil dilations)
- added some auxiliary functions
- minor changes in other files
Samples of  exported pupil dilation files
minor udpdates for running the EMDAT with PupilDilation calculations.
Updated documentation