README.md in csl-1.0.0.pre12 vs README.md in csl-1.0.0.pre13

@@ -43,10 +43,10 @@
 
 Copyright
 ---------
 Copyright 2012 President and Fellows of Harvard College.
 
-Copyright 2009-2012 Sylvester Keil. All rights reserved.
+Copyright 2009-2013 Sylvester Keil. All rights reserved.
 
 License
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 CiteProc is dual licensed under the AGPL and the FreeBSD license.