overhaul of histogram treatment
apply_roi made public
more tests for histogram code
side-panel plot dashboards
tweak validator constructor for old versions of PyQt
merge with staging branch
layout tweaks
use data.dtype in scatter client.
disable email import in glue_pickle. Not supported in mac build
MDI area shows scroll bars if panels overflow visible area. Fixes #100
Merge branch 'mdi_scroll' into staging
Increase terminal timer interval. Reduces CPU consumption dramatically
bugfix to histogram widget
toolbars only shown for the active widget
bugfixes
Warn on window close
Merge branch 'bugfixes' into staging
active plot window drawn with border
range selector for scatter widget
tweak validator init for old Qt versions