The Gson/Json code included in WPUtil is from Google Gson build 2.2.4.

Gson is included under its original license and copyright, and I make no 
claim of ownership to any of that library's code. I have renamed the 
packages and refactored imports accordingly so that an additional yet 
different copy of their library may be used at the same time. The package 
naming used for this copy of Gson is the same as it usually is, but with 
the prefixed package "weatherpony.util."

To conform with the Apache 2.0 license that Gson uses, the following line 
has been added to the included Gson library's source code files such that 
there are no line number changes:
This file has been modified from its original form in the following way: package renamings and/or import reordering
Any additional changes are documented in the appropriate files.

The included Gson code's copyright/license is below.

Copyright (C) 2009 Google Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

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

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.