Merge branch 'release/1.5.0.14' into develop
Merge branch 'master' into develop
Merge branch 'master' into develop
added first draft of alembic maya gui
added user attributes and expression checking
added cask and abcView to install in python_examples
added alembic editor dialog to maya scripts install
added editing to propertiers panel and width to first colum
bump version
Merge branch 'release/1.5.0.15'

Conflicts:
	maya/scripts/bb_alembicAssignmentEditorUI.py
added shelf button for alembic editor