removes Frozen Tabs in lieu of our ability to "extract" in databoxes
The recordScreen command slows down chrome, so removed it until we have a need
Publish and upgrade commons
Import memory cleanup from SecretAgent. We capture a lot of variables in closures that are owned by other objects (and/or link objects two ways - ie, core/Session.resources is created with a new Resources(session). Because the codebase is so broad, many of those tangles need to just be nulled out when we close things.
NOTE This PR is stacked on top of the PR #91