code: function Revision(ottype) {
    this.id = null
    this.parent
    this.changeset
    this.content = null
    this.author
    this.meta
    this.ottype = ottype
    if(!ottype) throw new Error('Revision: No ottype specified')
  }
docs: gulf - Sync anything!
  Copyright (C) 2013-2016 Marcel Klehr <mklehr@gmx.net>
  
  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
  
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
  
  You should have received a copy of the GNU Lesser General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.