* Added HDF5 exporter
* CSV exporter gets (x,y,y,y) export mode
* Updates to SVG, Matplotlib exporter
* Console can filter exceptions by string
* Added tick context menu to GradientEditorItem
* Added export feature to imageview
* Parameter trees:
- Option to save only user-editable values
- Option to set visible title of parameters separately from name
- Added experimental ParameterSystem for handling large systems of
interdependent parameters
- Auto-select editable portion of spinbox when editing
* Added Vector.__abs__
* Added replacement garbage collector for avoiding crashes on multithreaded Qt
* Fixed "illegal instruction" caused by closing file handle 7 on OSX
* configfile now reloads QtCore objects, Point, ColorMap, numpy arrays
* Avoid triggering recursion issues in exception handler
* Various bugfies and performance enhancements
- fixed example testing script
- Added finer axis ticks back in some instances
- fixed improper bounds caching in log/fft mode
- fixed exception handling in remoteproxy
- AxisItem shows 2 tick levels instead of 3
- Lots of boundingRect and dataBounds caching
(improves ViewBox auto-range performance, especially with multiple plots)
- GraphicsScene avoids testing for hover intersections with non-hoverable items
(much less slowdown when moving mouse over plots)
These are deep changes; need good testing before we release them.
- Can be anchored to parent item at any location
- Support for filled plot styles
- Automatically resizes to fit contents
- PlotItem can auto-generate legend
- documentation updates
- PlotItem informs all items when switching to log mode
- GradientEditorItem has sigGradientChangeFinished
- ParameterTree list types check linits on initialization
- Fixed RuntimeError in TreeWidget.clear()
- added ability for ScatterPlotItem to use arbitrary symbol shapes
- added scatter plot speed test for evaluating new methods
- added butterworth notch filter to flowchart library
- fixed bugs with ViewBox trying to close itself after python has started cleaning up
- fixed python 2.6 compatibility bug in PlotCurveItem
- fixed support for list-of-dicts and dict-of-lists input for PlotDataItem
- check to ensure Qt version is >= 4.7
- workaround for numpy segmentation fault
- several other minor updates and documentation changes
- fixed AxisItem sometimes drawing the same tick twice (sometimes with different text)
- fixed handling of record arrays in setting ScatterPlotItem point data
- HistogramLUTItem avoids using lookup table if possible
- GradientEditorItem has a method to ask whether the gradient is trivial (can be applied without the use of a lookup table)
- ROI, LinearRegionItem, InfiniteLine no longer redraw for every mouse movement
