chore: change licence to MIT-0

We've decided to simplify the Subplot licensing situation by changing
the licence to MIT-0 from the GPL.

See https://gitlab.com/subplot/subplot/-/issues/229 for agreements
from everyone involved.

Sponsored-by: author

1 files changed, 25 insertions, 11 deletions

diff --git a/README.md b/README.md
index 6134fb5..ac8699e 100644
--- a/README.md
+++ b/README.md
@@ -59,17 +59,31 @@ $ dpkg-buildpackage -us -uc
 
 # Legalese
 
-Copyright 2019-2021  Lars Wirzenius, Daniel Silverstone
+The Subplot software is released using the MIT licence. The copy of
+the licence text is from <https://mit-license.org/> originally.
 
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+## The MIT License (MIT)
 
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+Copyright 2019-2021  Lars Wirzenius, Daniel Silverstone
 
-You should have received a copy of the GNU General Public License
-along with this program. If not, see <http://www.gnu.org/licenses/>.
+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.
+
+Fork this project to create your own MIT license that you can always
+link to.