Minor typo correction
Minor typo correction
Minor typo correction
Uneeded space
Minor typo and syntax correction
Minor typo correction
Minor typo correction
Changing docstring to reflect code
Merge pull request #502 from yuvallanger/patch-2

Minor typo correction
Merge pull request #504 from yuvallanger/patch-3

Changing docstring to reflect code
Fix PV slicer cursor
Fix test
Rename xw,yw to x,y since they are pixel coordinates, not world coordinates
Merge pull request #505 from astrofrog/fix-pv-slice-cursor

Fix PV slicer cursor
First attempt at integrating a Ginga viewer into Glue
Updates to ginga viewer option

- now uses the icons for the toolbar and exclusive mode for tool choice
- improvement in rendering speed of redraws with data subsets
Small updates
Changed to using image overlays feature
Further partial updates
Extract mpl-agnostic base class out of ImageClient