0.4.0: double click extension
0.5.0: categorized values
0.5.1: i18n working
0.6.0: more graphical ui if desired
0.6.1: fixes with double-click extension
0.6.2: found more translatable strings ;)
0.6.3: less compiler warnings, some spacings in panel plugin, temperature scale switch
0.7.0: new options user interface

