+ * External diff and textconv helpers are now executed using the shell.
+ This makes them consistent with other programs executed by git, and
+ allows you to pass command-line parameters to the helpers. Any helper
+ paths containing spaces or other metacharacters now need to be
+ shell-quoted. The affected helpers are GIT_EXTERNAL_DIFF in the
+ environment, and diff.*.command and diff.*.textconv in the config
+ file.
+
+ * The --max-pack-size argument to 'git repack', 'git pack-objects', and
+ 'git fast-import' was assuming the provided size to be expressed in MiB,
+ unlike the corresponding config variable and other similar options accepting
+ a size value. It is now expecting a size expressed in bytes, with a possible
+ unit suffix of 'k', 'm', or 'g'.