Right now the only breaking api change seems to be around
ChannelManager going to RepoManager, and presumably associated domain objects were also changed.
More details are:
This will need updating too...
I made a section in the release notes for "structural changes" here:
I also updated the names of a couple of the variables in http://elladeon.fedorapeople.org/jon-drafts/3.0/cli/Working_with_the_CLI-Implicit_Variables.html.