Add missing release notes and manpage updates

In preparation for an upcoming release, add some release notes which
were overlooked since the last release. Also add missing bits to the
manpage, and fix the markup in two unreleased release notes while we
still can.

Change-Id: I8ddb6a36e62d36bff976455d8bfc0ac6a7230387

git-review.1

@@ -159,11 +159,15 @@ Sets the target topic for this change on the Gerrit server.
 If not specified, a bug number from the commit summary will be used. Alternatively, the local branch name will be used if different from remote branch.
 .It Fl T , Fl \-no\-topic
 Submit review without topic.
+.It Fl \-hashtags= Ns Ar taglist
+Comma-separated list of hashtag strings for this change, no spaces allowed.
+.It Fl \-message= Ns Ar message
+Optional quoted message to include with the patch set.
 .It Fl p , Fl \-private
 Send patch as a private patch ready for review. Gerrit versions >= 2.15
 .It Fl P , Fl \-remove\-private
 Send patch which already in private state to normal patch. Gerrit versions >= 2.15
-.It Fl w , Fl \-work\-in\-progress
+.It Fl w , Fl \-wip , Fl \-work\-in\-progress
 Send patch as work in progress for Gerrit versions >= 2.15
 .It Fl W , Fl \-ready
 Send patch that is already work in progress as ready for review. Gerrit versions >= 2.15

releasenotes/notes/abort-rebase-8bd29d8328818660.yaml

@@ -1,7 +1,7 @@
 ---
 features:
   - |
-    By default, `git rebase --abort` is run automatically following a failed
+    By default, ``git rebase --abort`` is run automatically following a failed
     test rebase, letting the user rebase again on their own if that's the state
-    they want to be in. A -K/--keep-rebase option is added to get the old
-    behavior.
+    they want to be in. A ``-K``/``--keep-rebase`` option is added to get the
+    old behavior.

releasenotes/notes/alias-wip-0502235d55e5a4cb.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    For convenience, ``--wip`` is now synonymous with the longer
+    ``--work-in-progress`` option.

releasenotes/notes/allow-dupe-head-702a1dcfb2406efb.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    If ``HEAD`` already exists on a remote branch, ``git review`` will now only
+    warn and prompt for confirmation when pushing, in order to let the Gerrit
+    server decide whether to accept or reject it.

releasenotes/notes/emmbed-commit-msg-hook-87509c496b561f97.yaml

@@ -6,5 +6,5 @@ features:
     This approach is safer and more robust, but may break workflows for sites
     which rely on users retrieving a customized commit-msg hook. For this
     reason, a command-line override is provided so that users can, for example,
-    execute `git review -s --remote-hook` to get the old behavior when setting
-    up a new clone.
+    execute ``git review -s --remote-hook`` to get the old behavior when
+    setting up a new clone.

releasenotes/notes/git-ssh-envvar-21d9ceb5a556009b.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    The ``GIT_SSH`` environment variable will now be consulted, if set, in
+    order to determine which ``ssh`` executable to call outside of ``git``
+    invocations, for consistency.

releasenotes/notes/hashtags-option-ce909662d7ebd4d7.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    A new ``--hashtags`` option allows specifying a list of one or more Gerrit
+    hashtag strings, separated by commas. Note that spaces are not allowed
+    either within a hashtag or between separators.

releasenotes/notes/message-option-52752c85d3ea1356.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    New ``--message`` option can be used to include a custom patchset message
+    when pushing.