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
Update tutorial
Merge remote-tracking branch 'origin/master'
Strip non-ASCII characters from libeyelink.log()
Merge branch 'master' of git@github.com:smathot/opensesame_eyelink_plugins.git
Experiments can now be aborted during drift-correction (both manual and fix-triggered)
To prevent accidental aborts, a confirmation message is displayed first.
Revert "Experiments can now be aborted during drift-correction (both manual and fix-triggered)"

This reverts commit d60a05496a3395f14f367ff58a8aca0042697d5a.
Experiments can now be aborted during drift-correction

almost identical to commit d60a05496a3395f14f367ff58a8aca0042697d5a
but without messing up sebastiaans line endings
Clean up eyelink_log and fix throttle issue with auto-logging
Merge remote-tracking branch 'wkbouter/master' into tmp
Some fixes to the abort-on-escape mechanism
Abort experiment on esc press is now handled in libeyelink

 - Esc-presses during drift correct are now dealt with more consistently.
Instead of in eyelink_calibrate or in eyelink_drift correct, this now
takes place in eyelink.drift_correct and eyelink.calibrate, so this behavior
is consistent throughout the experiment.

 - to prevent bloating of eyelink.drift_correct, manual drift correct now has
its own function as well. The documentation of these functions needs to be
further updated still
Abort experiment on esc press is now handled in libeyelink

 - Esc-presses during drift correct are now dealt with more consistently.
Instead of in eyelink_calibrate or in eyelink_drift correct, this now
takes place in eyelink.drift_correct and eyelink.calibrate, so this behavior
is consistent throughout the experiment.

 - to prevent bloating of eyelink.drift_correct, manual drift correct now has
its own function as well. The documentation of these functions needs to be
further updated still
Merge branch 'clean_esc_press'

Conflicts:
	eyelink_calibrate/libeyelink.py

Last commit was too early -- attempt fix
Some clean-up
Bumpt to 0.23
Updated dummy

Added an updated dummy version, based on previous comments (i.e.: backwards compatibility intact and back-end independence)