redshift 1.10

redshift 1.9.1

Redshift 1.9

Merge updates from v1.8 release

Update NEWS and configure.ac for 1.7 release.

Update PO files.

Fix switch of status icons in gtk-redshift.

Update translation files.

Update AUTHORS, NEWS, configure.ac for 1.4.1.

Add missing file to Makefile.am.

Fix detection of GUI dependencies in configure.ac.

Update NEWS for 1.3 release.