Plugin versions:
2018/09/11 v.1.0
- porting to 3.* QGIS versions
2015/05/15 v.0.4.2
- changed the coding routine: now it run much faster, but it requires
that the user save manually the edited values at the end (or during)
the session
2015/05/11 v.0.4.1
- added reference to GitHub code repository / tracker
2015/05/08 v.0.4
- now the plugin tool button is loaded into "plugins" toolbar
2015/04/23 v.0.3
- added the loading of mixed classes
2015/04/22 v.0.2 (first stable version)
- added the request for setting active layer and destination column
- added a feedback during coding activity
2015/04/21 v.0.1 (initial experimental version)