Merge branch 'temp2' into temp1
Merge branch 'develop'

Release 0.2.0
Merge branch 'develop' (Release 0.2.1)
Merge branch 'develop'
Merge branch 'develop'
Tasklist: add duration and improve formatting

Addresses #85
Save column widths
Tasklist: fix bugs with 0 items
Remove non-existing menu reference
Fix bug in wxsession
Prepare 0.3.1 release
Merge branch 'hotfix' into develop

Conflicts:
	src/outspline/interfaces/wxgui/rootw.py
	src/outspline/interfaces/wxgui_api.py
Adapt editor plugin panels  to wxPython 3.0.0.0
wxPython 3.0.0.0 doesn't allow calling wx.CallLater from non-main threads
Fix for wxPython 3.0.0.0
Fix bug
Use Choice instead of read-only ComboBox
Fix bug
Fix bug
Show gaps and overlappings in tasklist