close inactive compatibility branch

evolve: raise MultipleSuccessorsError when computing dependency for split commits We don't know how to handle dependency for split commits yet. When facing a splitted commit, instead of silently adding the first successor to the dependency list and fail later, we do nothing.

next/prev: require --merge to move with uncommitted changes This should previous common mistake.

merge with stable

Added tag 5.1.5 for changeset 1377f6a7f9ec

prepare version 5.1.5

evolve: non recursive implementation for _aspiringdescendants We switch from a N squared recursive implementation for _aspiringdescendants to a more efficient algorithm in O(len(unstable)).

evolve: distinct between '--all' and '--all --any' Before this patch, evolve --all implied evolve --all --any. With this patch evolve --all evolves all the aspiring descendants of the parent of the working copy. evolve --all --any does what evolve --all did before: evolving all the troubles in the repo. We add anew function _aspiringdescendant for this purpose

rework refactor _aspiringchildren by introducing _possibledestination This allows us to reuse some of the logic for evolve from _aspiringchildren for the new implementation of evolve --all. The logic is also better as some previously selected changesets may not actually evolve on the target, and some changesets that does not would not.

evolve: consider all potential candidates on bare evolve Instead of stopping at the first resolution, we returns all matches. If there is ambiguity, we abort. The function itself seems fairly flawed but will do the job in simple case.