Log Message:
Update to 0.34:

        The internal data format has changed with this release;
        migration is straight-forward.  To upgrade your databases,
        you must run:
               $ mtn -d mydb.mtn db migrate
        All of these operations are completely lossless, and 0.34
        remains compatible with earlier versions all the way back
        to 0.26 with regards to netsync.

        Changes

        - Text is now output at best of the environment's possibilities,
          transliterating them or substituting '?' as needed.

        - The lua hook get_author() now takes a second argument, a
          key identity, in case someone wants to create an author based
          on that and not only the branch name.

        - The command 'chkeypass' became 'passphrase'.

        - The commands 'drop', 'rename' and 'pivot_root' default to
          always perform the operation in the file system as well.
          They do not accept '--execute' any more, but will instead
          take '--bookkeep-only' in case the user only wants to affect
          bookkeeping files.

        New features

        - New hook note_mtn_startup(), which is called when monotone is
          started.

        - New Lua support function spawn_pipe(), which is used to run
          a command and get back its standard input and standard output
          file handles as well as the pid.

        - Monotone will automatically add a monotone key in a resident
          ssh-agent when it's first used, and will then use ssh-agent
          for all subsequent signing.  Thus, you will only need to give
          the password once in one session.
        - New command 'ssh_agent_export' to export a monotone key into
          an SSH key.
        - New command 'ssh_agent_add' to add a monotone key explicitly
          to a resident ssh-agent.

        - New command 'clone' that combines 'pull' and 'checkout'.

        - 'automate put_file' and 'automate put_revision' stores a file
          and a revision in the database.

        - 'automate cert', an automate version of 'mtn cert'.
        - 'automate db_set', an automate version of 'mtn set'.
        - 'automate db_get', an automate version of 'mtn ls vars' with
          a twist.

        Other

        - contrib/ciabot_monotone_hookversion.py now uses a real
          basic_io parser and thus should send more precise
          information to the cia server. Furthermore, it has become
          more careful with creating zombies.

        - contrib/monotone-log-of-pulled-revs-hook.lua, a lua hook
          to display information about incoming revisions.

        - contrib/monotone-mirror-postaction-push.sh, a post action
          script that should be executed by contrib/monotone-mirror.sh
          to automatically push data on to other servers.

        - contrib/monotone-mirror.lua, a lua hook that executes
          contrib/monotone-mirror.sh after any netsync session is done.

        - contrib/monotone-mirror.sh now takes keydir and keyid
          configuration and has better protection against overlapping
          duplicate runs.

        - contrib/monotone.bash_completion now handles signals.

        - contrib/monotone.el now includes a commit button.

        Internal

        - Date and time display has now been reimplemented internally
          to avoid Boost more.  This means that we have lowered our
          dependency from Boost 1.33.0 to 1.32.0.

        - Lots of code cleanup.

        - The heights cache got an index, making the processing faster.

        - Update the internal SQLite to version 3.3.13.

        - Algorithm to find uncommon ancestors has been rewritten, so
          'pull' and 'regenerate_caches' should be faster.