Can't change type of a topic in dev mode

[stuartwdouglas]

If you have a topic with a subscriber you can't change the type of the topic as the changes are not grouped into a single changeset.

If we have failed modules in dev mode we should likely always be re-attempting in new changesets.

[matt2e]

Is this the case for changing anything other modules depend on? Like changing a verb signature…
I was thinking about this yesterday and meant to test it out.
Possibly we should make the changeset failure event include which modules prevented it being merged in, and the engine could then group them as those dependant modules get rebuilt