Log Message:
Update nano to 2.5.0

    2015.12.05 - GNU nano 2.5.0 "Karma", the first release of the 2.5 \ 
series,
                is now available. Please note that as of this release,
                there will no longer be separate stable and unstable
                branches. The development team will prioritize bug fixes
                as needed, and make new releases in proportion to the
                severity of the bugs which are fixed.
                        This release includes all of the fixes now in
                2.4.3, as well as color syntax highlighting improvements,
                undo fixes, and many more improvements!  Thank you for
                using nano!