Add LICENSE, update copyright

LICENSE

+MIT License
+
+Copyright (c) 2010-2018 Autistici/Inventati <info@autistici.org>
+
+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.

debian/copyright

@@ -3,11 +3,11 @@ Upstream-Name: autoca
 Source: <https://git.autistici.org/ai/autoca>
 
 Files: *
-Copyright: 2010-2014 Autistici/Inventati
+Copyright: 2010-2018 Autistici/Inventati
 License: MIT
 
 Files: debian/*
-Copyright: 2013 Autistici/Inventati <info@autistici.org>
+Copyright: 2013-2018 Autistici/Inventati <info@autistici.org>
 License: MIT
 
 License: MIT