MIT -> Expat & factor out license paragraph

debian/changelog

@@ -6,7 +6,10 @@ pdfrw (0.2-3) UNRELEASED; urgency=medium
     This fixes co-installing python-pdfrw and python3-pdfrw, and other
     package combinations.
     Thanks to Aaron M. Ucko and Yuri D'Elia for useful information.
-  * Add proper DEP-5 header to copyright file.
+  * d/copyright improvements:
+    - Add proper DEP-5 header
+    - Correct licence name MIT -> Expat
+    - Factor out Expat license text into its own paragraph
   * Fix Vcs-* URIs.
     They were previously pointing at the dgit repo for src:botch.
   * Declare compliance with Policy 3.9.8 (no changes required).

debian/copyright

@@ -4,28 +4,13 @@ Source: https://github.com/pmaupin/pdfrw
 
 Files: *
 Copyright: © 2006-2009 Patrick Maupin
-License: MIT
- 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.
+License: Expat
 
 Files: debian/*
 Copyright: © 2011 Chris Lamb <chris@chris-lamb.co.uk>
-License: MIT
+License: Expat
+
+License: Expat
  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