code: function Chain(val, name) {
      if (!(this instanceof Chain)) return new Chain(val, name);
  
  	this._val = val;
  	this._name = name;
  
  	this.clear();
  
  	return this;
  
  }
docs: Creates a chain instance
  
  @constructor
  @this {Chain}
  @param {!Object} val The value the chain is focused on
  @param {string} name A human-readable name of the value