This _could_ cause other problems, but they will certainly be fewer than the existing problems.
- Fixed bugs with ViewBox linking to views which are subsequently deleted
- optional context menu for ImageItem
- inverted y-axis in Canvas (+y now points upward)
- extra __init__ arguments for Dock
- Transform can be constructed from Matrix4x4
- many others
- Added rate-limited mode to SignalProxy
- Added basic text justification to LabelItem
- ViewBox.addItem now has ignoreBounds option, which causes the item to be ignored when autoscaling
- Added ValueLabel widget
- Fixed some autoscaling bugs
- InfiniteLine fix - no hilight if movable=False
Moved GraphicsScene to its own directory, added exportDialog
Removed old export options from PlotItem / ViewBox (will re-enable once they are working again)