Add license file. Fixes #228, #282.

Author: ioquatix

license.md

@@ -0,0 +1,58 @@
+# MIT License
+
+Copyright, 2011-2020, by Tony Arcieri.
+Copyright, 2012, by Logan Bowers.
+Copyright, 2013, by FURUHASHI Sadayuki.
+Copyright, 2013, by Stephen von Takach.
+Copyright, 2013, by Tim Carey-Smith.
+Copyright, 2013, by brainopia.
+Copyright, 2013, by Luis Lavena.
+Copyright, 2014, by SHIBATA Hiroshi.
+Copyright, 2014, by Sergey Avseyev.
+Copyright, 2014, by JohnnyT.
+Copyright, 2015-2017, by Tiago Cardoso.
+Copyright, 2015, by Daniel Berger.
+Copyright, 2015, by Upekshe.
+Copyright, 2015-2016, by UpeksheJay.
+Copyright, 2015, by Vladimir Kochnev.
+Copyright, 2016-2018, by Jun Aruga.
+Copyright, 2016, by Omer Katz.
+Copyright, 2016-2021, by Olle Jonsson.
+Copyright, 2017, by usa.
+Copyright, 2017, by HoneyryderChuck.
+Copyright, 2017, by tompng.
+Copyright, 2018-2021, by Samuel Williams.
+Copyright, 2019, by Cédric Boutillier.
+Copyright, 2019-2020, by MSP-Greg.
+Copyright, 2019-2020, by Benoit Daloze.
+Copyright, 2019, by Jesús Burgos Maciá.
+Copyright, 2019, by Thomas Kuntz.
+Copyright, 2019, by Orien Madgwick.
+Copyright, 2019, by Thomas Dziedzic.
+Copyright, 2019, by Zhang Kang.
+Copyright, 2020, by eladeyal-intel.
+Copyright, 2020, by Pedro Paiva.
+Copyright, 2020, by Bo.
+Copyright, 2020, by Charles Oliver Nutter.
+Copyright, 2020-2021, by Joao Fernandes.
+Copyright, 2021, by Jun Jiang.
+Copyright, 2021, by Jeffrey Martin.
+Copyright, 2021, by Pavel Lobashov.
+
+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.