Changelog update.

[ci skip]

Author: 23Skidoo

cabal-install/changelog

@@ -3,6 +3,8 @@
 2.2.0.0 (current development version)
 	* 'cabal update' supporst '--index-state' which can be used to
 	roll back the index to an earlier state.
+	* 'cabal new-configure' now backs up the old 'cabal.project.local'
+	file if it exists (#4460).
 
 2.0.0.0 Ryan Thomas <[email protected]> May 2017
 	* Removed the '--root-cmd' parameter of the 'install' command