+** psensor: implemented the psensor uniquess, non-primary psensor
+ instances show the window of the primary psensor instance and
+ exits.
+** many code quality improvements.
+** psensor: added --new-instance option to allow the creation of
+ multiple instances of Psensor.
+** psensor: added the degree sign before the temperature symbols.
+** psensor: alarm limit edition using the temperature unit set in the
+ global pref.
+** psensor: improved notification (added psensor icon and value of the
+ sensor).