1 Copyright 2014 Alan Shreve

     2 

     3 Licensed under the Apache License, Version 2.0 (the "License");

     4 you may not use this file except in compliance with the License.

     5 You may obtain a copy of the License at

     6 

     7    http://www.apache.org/licenses/LICENSE-2.0

     8 

     9 Unless required by applicable law or agreed to in writing, software

    10 distributed under the License is distributed on an "AS IS" BASIS,

    11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

    12 See the License for the specific language governing permissions and

    13 limitations under the License.