old_contents: 
  /**
   * Delegates Firebase#createUser.
   * @method Fireproof#createUser
   * @param {Object} credentials
   * @param {Function} [onComplete]
   * @returns {Promise}
   */
  Fireproof.prototype.createUser = function(credentials, onComplete) {
  
    var oc = Fireproof._handleError(onComplete);
    this._ref.createUser(credentials, oc);
    return oc.promise;
  
  };
  
  
  /**
   * Delegates Firebase#changeEmail.
   * @method Fireproof#changeEmail
   * @param {Object} credentials
   * @param {Function} [onComplete]
   * @returns {Promise}
   */
  Fireproof.prototype.changePassword = function(credentials, onComplete) {
  
    var oc = Fireproof._handleError(onComplete);
    this._ref.changeEmail(credentials, oc);
    return oc.promise;
  
  };
  
  
  /**
   * Delegates Firebase#changePassword.
   * @method Fireproof#changePassword
   * @param {Object} credentials
   * @param {Function} [onComplete]
   * @returns {Promise}
   */
  Fireproof.prototype.changePassword = function(credentials, onComplete) {
  
    var oc = Fireproof._handleError(onComplete);
    this._ref.changePassword(credentials, oc);
    return oc.promise;
  
  };
  
  
  /**
   * Delegates Firebase#resetPassword.
   * @method Fireproof#resetPassword
   * @param {Object} credentials
   * @param {Function} [onComplete]
   * @returns {Promise}
   */
  Fireproof.prototype.resetPassword = function(credentials, onComplete) {
  
    var oc = Fireproof._handleError(onComplete);
    this._ref.resetPassword(credentials, oc);
    return oc.promise;
  
  };
  
  
  /**
   * Delegates Firebase#removeUser.
   * @method Fireproof#createUser
   * @param {Object} credentials
   * @param {Function} [onComplete]
   * @returns {Promise}
   */
  Fireproof.prototype.removeUser = function(credentials, onComplete) {
  
    var oc = Fireproof._handleError(onComplete);
    this._ref.removeUser(credentials, oc);
    return oc.promise;
  
  };
  
new_contents: 
  /**
   * Delegates Firebase#createUser.
   * @method Fireproof#createUser
   * @param {Object} credentials
   * @param {Function} [onComplete]
   * @returns {Promise}
   */
  Fireproof.prototype.createUser = function(credentials, onComplete) {
  
    var oc = Fireproof._handleError(onComplete);
    this._ref.createUser(credentials, oc);
    return oc.promise;
  
  };
  
  
  /**
   * Delegates Firebase#changeEmail.
   * @method Fireproof#changeEmail
   * @param {Object} credentials
   * @param {Function} [onComplete]
   * @returns {Promise}
   */
  Fireproof.prototype.changeEmail = function(credentials, onComplete) {
  
    var oc = Fireproof._handleError(onComplete);
    this._ref.changeEmail(credentials, oc);
    return oc.promise;
  
  };
  
  
  /**
   * Delegates Firebase#changePassword.
   * @method Fireproof#changePassword
   * @param {Object} credentials
   * @param {Function} [onComplete]
   * @returns {Promise}
   */
  Fireproof.prototype.changePassword = function(credentials, onComplete) {
  
    var oc = Fireproof._handleError(onComplete);
    this._ref.changePassword(credentials, oc);
    return oc.promise;
  
  };
  
  
  /**
   * Delegates Firebase#resetPassword.
   * @method Fireproof#resetPassword
   * @param {Object} credentials
   * @param {Function} [onComplete]
   * @returns {Promise}
   */
  Fireproof.prototype.resetPassword = function(credentials, onComplete) {
  
    var oc = Fireproof._handleError(onComplete);
    this._ref.resetPassword(credentials, oc);
    return oc.promise;
  
  };
  
  
  /**
   * Delegates Firebase#removeUser.
   * @method Fireproof#createUser
   * @param {Object} credentials
   * @param {Function} [onComplete]
   * @returns {Promise}
   */
  Fireproof.prototype.removeUser = function(credentials, onComplete) {
  
    var oc = Fireproof._handleError(onComplete);
    this._ref.removeUser(credentials, oc);
    return oc.promise;
  
  };
  
subject: correct name of changeEmail