Bump to v0.21
Minor cleanup
Add pupil_size() function and minor cleanup
Respect line wrapping and disable saccade event bug-fix (for now)
Rename exp_eyelink_delay to eyelink_clock_async
Add auto-log option to eyelink_log plug-in
Bump to 0.22
correct difference OS and eyelink time
Fixed exceptions not defined

Added "from libopensesame import exceptions" again as this class was
used elsewhere in the program but never imported
Merge remote-tracking branch 'upstream/master'

Conflicts:
	eyelink_calibrate/libeyelink.py
Conflict resolution of upstream changes

Merged conflicts occurring with 0.22
solved timing issues OS vs Eyelink

Wouters changes that minimize the timing discrepancies between the OS
and Eyelink time measurements
added .gitignore
Removed gitignore from commit
Merge pull request #7 from dschreij/master

Correct discrepancies eyelink and OS time
Remove extraneous Thumbs.db files
Add drift correction option (gives segfault for now)
Fix eyelink drift correction command