update version to 1.6.0, update copyright year

changelog.txt

@@ -1,5 +1,5 @@
 
-version 1.5.5
+version 1.6.0 (3/18/13)
 	- visual facelift, with bootstrap-inspired buttons and colors
 	- simplified HTML/CSS for events and buttons
 	- dayRender, for modifying a day cell (issue 191, thx althaus)

fullcalendar.jquery.json

@@ -1,6 +1,6 @@
 {
   "name": "fullcalendar",
-  "version": "1.5.4-final",
+  "version": "1.6.0",
   "dependencies": {
     "jquery": "~1.8.1"
   },
@@ -30,5 +30,5 @@
     "email": "arshaw@arshaw.com",
     "url": "http://arshaw.com/"
   },
-  "copyright": "2012 Adam Shaw"
+  "copyright": "2013 Adam Shaw"
 }