+1 on this. I use Tower which has really nice submodule support.
In demoing Sublime Merge — if I move branches that use a different submodule or different submodule version, I get uncommitted changes, either a folder where the submodule was or commit change on submodule.
In demoing Sublime Merge — if I move branches that use a different submodule or different submodule version, I get uncommitted changes, either a folder where the submodule was or commit change on submodule.
Other than this it looks great!