License for Dygraphs

Dygraphs "is an open source JavaScript library that produces produces interactive, zoomable charts of time series. It is designed to display dense data sets and enable users to explore and interpret them."

Dygraphs is used as an optional part of the export HTML feature of Vergil.

On February 2, 2013 https://github.com/danvk/dygraphs#readme said:
dygraphs is available under the MIT license, included in LICENSE.txt.

dygraphs JavaScript charting library
Copyright (c) 2006-, Dan Vanderkam.

Documentation: http://dygraphs.com/
Support: http://groups.google.com/group/dygraphs-users
Source: http://github.com/danvk/dygraphs
Issues: http://code.google.com/p/dygraphs/

The dygraphs JavaScript library produces interactive, zoomable charts of time series.

License(s) dygraphs uses: automated tests use: Linter uses:

rgbcolor: http://www.phpied.com/rgb-color-parser-in-javascript/
strftime: http://tech.bluesmoon.info/2008/04/strftime-in-javascript.html
excanvas: http://code.google.com/p/explorercanvas/
yui compressor: http://developer.yahoo.com/yui/compressor/
jsdoc toolkit: http://code.google.com/p/jsdoc-toolkit/

jquery: http://code.jquery.com/jquery-1.4.2.js
Asserts.js: http://www.google.com/codesearch/p?#3tsINRJRCro/trunk/JsTestDriver/src/com/google/jstestdriver/javascript/Asserts.js
JSTestDriver: http://code.google.com/p/js-test-driver/

JSHint: jshint.com

dygraphs is available under the MIT license, included in LICENSE.txt.

On February 2, 2013 https://github.com/danvk/dygraphs#readme said:

Copyright (c) 2009-2013 Dan Vanderkam

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.