Add the possibility to directly start a feature from another one about twgit

[ltoussaint]

It could be useful to start new feature F1 from feature F2 but without creating F1 from the last tag.

[Niboul]

If feature F2 was started from feature F1, and if feature F1 has evolved, it could be useful to suggest (or make it automatically) the merge when making a git pull.

Maybe the feature F1 can have many feature child..

[ltoussaint]

It's a good point.

think we should only suggest the merge, like done after closing a hotfix when a release already exists.

[geoffroy-aubry]

👍