Merge pull request #3367 from DynamoDS/master

Merge master to Release branch RC0.7.5_master
Merge branch 'SchedulerFix' into SchedulerFix0.7.5
Merge pull request #3383 from pboyer/SchedulerFix0.7.5

MAGN-5593: 0.7.5
Update README.md
Update README.md
Synced LibG DLLs to latest. Fixes MAGN-5673: crash on PolyCurve empty input
Hand merge changes for #3431
Merge remote-tracking branch 'origin/RC0.7.5_master' into RC0.7.5_Revit2015