Update submodules: parser (new commits)

parser:
    3208c0a Chris Smith <chris@dmdirc.com>
            Add a manager for prefix modes.

            This removes a tiny bit of the ugly logic in IRCParser and hides
            it away slightly.

            Gerrit: http://gerrit.dmdirc.com/3953

Change-Id: I35834f81e3074e0c20aef457f8f8450e92cd067e