Add COPYING

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/COPYING b/COPYING
new file mode 100644 (file)
index 0000000..efd353c
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,20 @@
+    moebius3
+
+    Copyright (C) 2017  Ian Jackson
+    Copyright (C) 2012 - 2016 The matplotlib development team
+    Copyright (C) 2002 - 2012 John Hunter, Darren Dale, Eric Firing,
+                              Michael Droettboom and the
+                              matplotlib development team
+
+    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.
+
+    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.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.