+ * "git submodule update" learned to honor "none" as the value for
+ submodule.<name>.update to specify that the named submodule should
+ not be checked out by default.
+
+ * When populating a new submodule directory with "git submodule init",
+ the $GIT_DIR metainformation directory for submodules is created inside
+ $GIT_DIR/modules/<name>/ directory of the superproject and referenced
+ via the gitfile mechanism. This is to make it possible to switch
+ between commits in the superproject that has and does not have the
+ submodule in the tree without re-cloning.
+