GitLab

- Added pyqtgraph.systemInfo() for bug reporting
- GraphicsLayout does a better job of avoiding occupied cells when using automatic placement
- Fixed sizing issues with LabelItem
- Updated GraphicsLayout example

   - fixed AxisItem sometimes drawing the same tick twice (sometimes with different text)
   - fixed handling of record arrays in setting ScatterPlotItem point data

  - 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