UI, Workflows & Features
+ * "git diff" compares the index and the working tree. For paths
+ added with intent-to-add bit, the command shows the full contents
+ of them as added, but the paths themselves were not marked as new
+ files. They are now shown as new by default.
+
+ "git apply" learned the "--intent-to-add" option so that an
+ otherwise working-tree-only application of a patch will add new
+ paths to the index marked with the "intent-to-add" bit.
+
Performance, Internal Implementation, Development Support etc.
+ * The bulk of "git submodule foreach" has been rewritten in C.
+
+ * The in-core "commit" object had an all-purpose "void *util" field,
+ which was tricky to use especially in library-ish part of the
+ code. All of the existing uses of the field has been migrated to a
+ more dedicated "commit-slab" mechanism and the field is eliminated.
+
+ * A less often used command "git show-index" has been modernized.
+ (merge fb3010c31f jk/show-index later to maint).
+
+ * The conversion to pass "the_repository" and then "a_repository"
+ throughout the object access API continues.
+
+ * Continuing with the idea to programatically enumerate various
+ pieces of data required for command line completion, teach the
+ codebase to report the list of configuration variables
+ subcommands care about to help complete them.
+
+ * Separate "rebase -p" codepath out of "rebase -i" implementation to
+ slim down the latter and make it easier to manage.
+
Fixes since v2.18
-----------------
+
+ * "git remote update" can take both a single remote nickname and a
+ nickname for remote groups, and the completion script (in contrib/)
+ has been taught about it.
+ (merge 9cd4382ad5 ls/complete-remote-update-names later to maint).
+
+ * "git fetch --shallow-since=<cutoff>" that specifies the cut-off
+ point that is newer than the existing history used to end up
+ grabbing the entire history. Such a request now errors out.
+ (merge e34de73c56 nd/reject-empty-shallow-request later to maint).
+
+ * Code cleanup.
+ (merge aee9be2ebe sg/update-ref-stdin-cleanup later to maint).