Added group observer class prototype
refs #858
Merge branch 'master' into groups-notify
Add docstrings and comments
refs #858
Rename planned method in group class
refs #858
Add freshness check
refs #858
Merge branch 'master' into groups-notify

Conflicts:
	pisak/scanning.py
refs #858
Fixed bad arguments in hasattr
Added group refreshing logic
refs #858
Added refreshing groups when stage changes
refs #858
Merge branch 'master' into groups-notify
Added group update from speller prediction
refs #918
Removed watch variables
refs #858
Compacted loop in prediction update
refs #918
Merge branch 'prediction-group-refresh'
Merge branch 'master' of github.com:BrainTech/pisak