+ * The smudge/clean filter API expect an external process is spawned
+ to filter the contents for each path that has a filter defined. A
+ new type of "process" filter API has been added to allow the first
+ request to run the filter for a path to spawn a single process, and
+ all filtering need is served by this single process for multiple
+ paths, reducing the process creation overhead.
+
+ * The user always has to say "stash@{$N}" when naming a single
+ element in the default location of the stash, i.e. reflogs in
+ refs/stash. The "git stash" command learned to accept "git stash
+ apply 4" as a short-hand for "git stash apply stash@{4}".
+