* Since git 1.7.4:
** Recursive fetching of submodules can be enabled via command line option or configuration.
* Since git 1.7.5:
-** fetch runs recursively on submodules by default when new commits have been recorded for them in the superproject
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+** fetch runs recursively on submodules by default when new commits have been recorded for them in the superproject
+* Since git 1.7.7:
+** git push learned the --recurse-submodules=check option which errors out when trying to push a superproject commit where the submodule changes are not pushed
+* Since git 1.7.7:
+** The "update" option learned the value "none" which disables "submodule init" and "submodule update"
+** The git directory of a newly cloned submodule is stored in the .git directory of the superproject, the submodules work tree contains only a gitfile. This is the first step towards recursive checkout, as it enables us to remove a submodule directory.
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