Add link to submodule diff when submodule refs change
Problem to solve
When looking at a diff (e.g. on an MR), changes to submodules are shown only as the change in the referenced commits:
mylibrary @ bbbbbbbb
- Subproject commit aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+ Subproject commit bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
While the heading is a link to the submodule project, it's hard to actually see what changed in the submodule.
Proposal
Simply add a link to submodule/compare?from=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa&to=bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
.
This will make it a one-click task to see what changed in the submodule between the points of reference in the super project.