Update LABEL.
Better comment.
Add new functions to LABEL.
Tagging for release 0.4.0
Tagging for release 0.3.5
Tagging for release 0.3.4
Tagging for release 0.3.3
Tagging for release 0.3.2
Retagging version 0.3.1 for release.
New tag for release 0.3.0.