Shapeout2

- feat: export filter ray for each dataset via shortcut (119)
- setup: bump dclab from 0.39.15 to 0.39.17 (118)

- fix: extensions not loaded during startup on Windows (117)

- fix: polygon translation via drag-n-drop in polygon edit mode
was not taken into account (115)
- enh: add (de-)select all button for lists in ComputeStatistics (116)
- enh: convert all selectable lists in dialogs to new BulkList class
- setup: bump dclab from 0.39.13 to 0.39.15

- enh: display session file name in window title
- setup: drop support for older numpy versions
- setup: bump dclab from 0.39.9 to 0.39.13 (fix visualization of
the "ml_class" score when the ml_score features contain nans)

- fix: implement closeEvent in main and ask user before exiting
- fix: fix possible failure during update check
- fix: show a message box when the R version is incompatible (114)
- ref: only reload R/lme4 information in preferences when the
corresponding tab is selected to avoid preferences lock-up (114)
- tests: use hidden settings variable to skip asking the user to
clear the session
- setup: bump dclab from 0.39.5 to 0.39.9

- setup: bump dclab from 0.39.3 to 0.39.5 (fix opening files
with some online filter settings)