Bug fixes:
* cross_section: CrossSectionWidget.update_plot argument 'obj' was not optional as in CrossSectionPlot.update_plot
* Contrast adjustment panel: when setting range (i.e. possible change of image data), levels histogram was not updated
* Tests: handling I/O errors occuring when user has no write permission on current directory
* Image items: bugfixes in ImageItem (scale issues: replaced x0,y0,dx,dy by xmin,xmax,ymin,ymax) + added intermediate class RawImageItem (ImageItem without scale)
* Image module: fixed pixel alignment issues (get_closest_indexes, ...)
* TrImageParam: fixed wrong class inheritance
* LegendBoxItem/bugfix: missing argument for include_item
* guiqwt.image.get_filename: bugfix when filename is None
* ErrorBarCurveItem.set_data: now accepts None for both dx and dy (interface consistency with its parent class, CurveItem)
* Image items/Align rectangular shape to image pixels/bugfix: this feature was not working for scaled images (ImageItem, MaskImageItem, ...)
* guiqwt.curve/image: improved autoscale method (now works with curves plotted on two different Y-axes)
* guiqwt.image: fixed issues related to empty filename/data when pickling/unpickling items
* OpenFileTool: now remembers the previously browsed directory
* Fixed PyQt >=v4.8 compatibility issue: PyQt is less permissive with signal string syntax (PyQt_PyObject is mandatory for passing a Python/C++ object)
* guiqwt.fit: fixed rounding error due to slider's non-continuous behaviour
* guiqwt.label/bugfix: text label was reset to '' when redrawn
* guiqwt.fit: bugfixes when using logscale
* guiqwt.io.array_to_imagefile/text files: format is now '%d' for integer data types
* (Fixes Issue 7) guifit: standard fit boundary excludes rightmost value
* guiqwt/curve.py: added workaround to avoid division by zero when clicking between curves
* guiqwt/io.py-array_to_dicomfile: fixed ambiguous VR for PixelData when changing DICOM data (forced to 'OB')
* Bugfix: recent versions of PyQt don't like the QApplication reference to be stored in modules (why is that?)
* Annotation/get_infos: fixed unicode error occuring with py2exe distribution only
Possible API compatibility issues:
* Panel interface: added mandatory method 'configure_panel' which is called just before adding the very first tool to the manager
* baseplot: renamed guiqwt.baseplot.EnhancedQwtPlot to BasePlot
Other changes:
* Cross sections/apply lut option turned on: now clipping data between 0 and LUT_MAX (0-1023), as it is done for displayed data
* Added RGBImageItem
* Scaler extension: added support for boolean arrays (e.g. for showing masks)
* Added DeleteItemTool (add an entry "Remove" in plot item context menu)
* Plot items/introduced notion of "private items": new item methods: (is_private, set_private), new plot methods: (get_private_items, get_public_items)
* BaseImageItem.get_closest_indexes (+code refactoring): added argument 'corner' -> see new method 'get_closest_index_rect'
* Shapes/Annotations: code cleaning/refactoring + implemented 'get_rect' method for EllipseShape
* Tools deriving from InteractiveTool: added arguments 'title', 'icon' and 'tip' to customize the tool's action
* MaskedImageItem: added ImageMaskTool to edit image's mask interactively
* ShapeParam: added attributes "private" and "readonly"
* interfaces.IBasePlotItem: added argument 'ctrl=None' to 'move_local_point_to' (ctrl is True when 'Ctrl' button is pressed)
* Ellipse/Circle shapes: when pressing 'Ctrl' button while resizing the shape, its center position will remain unchanged
* guiqwt.plot: added classes CurveWindow/ImageWindow (derived from QMainWindow)
* Added transitional package guiqwt.transitional (regroup all Qwt5 import statements)
* BasePlot: added class attributes AXIS_IDS, AXIS_NAMES (removed AXES)
* BasePlot: added methods 'set_axis_limits' and 'get_axis_limits'
* BasePlot: added method 'set_axis_ticks' to set axis major tick step size or maximum number of major ticks and maximum of minor ticks
* Cross section panels: added interface to handle the cross section curve data when updated
* Panel widgets are now dockable
* guiqwt.fit: code cleaning/refactoring + added FitWidget (similar to FitDialog but inherits directly from QWidget)
* guiqwt.fit: fit params may now be changed as often as needed (the param widgets are reconstructed then)
* guiqwt.fit: replaced set_fit_func and set_fit_params by set_fit_data (non sense to be setting one without the other)
* Added vertical/horizontal cursor plot items (+ tools + cursor info label): see builder.make.vcursor, hcursor and info_cursor
* Cross section panel: added button "auto refresh" (enabled by default) (e.g. may be disabled for large images)
* Added signal SIG_MASK_CHANGED, emitted by plot when an image mask has changed
* guiqwt.fit.FitWidget/FitDialog: now working with no fit param
* guiqwt.signals.SIG_ITEM_REMOVED is now emitted by plot when an item is removed from the item list panel (as before) or using the delete item tool (new)
* Cross section plot: added tool 'DeleteItemTool'
* guiqwt.builder/scaled image items (ImageItem, RGBImageItem, ...): added option 'pixel_size' (alternative to xdata and ydata)
* guiqwt.fit: added option 'param_cols' to regroup N fit parameters on each row
* SnapshotTool: added options to add images together (instead of the default replace behavior) + bugfixes
* Renamed signal_app.py to sift.py (Sifia -> Sift)
* Sift: added support for image processing
* Image levels histogram (contrast panel): replaced the 'remove first bin' feature by an intelligent Y-axis scaling
* guifit: reorganized layout to gain some space + added option 'size_offset' to change param label's size
* guiqwt.plot.CurveDialog: added attribute 'button_box' (reference to the QDialogButtonBox instance)
* guiqwt.io: added open/save filedialog filters 'IMAGE_LOAD_FILTERS' (types supported by 'imagefile_to_array') and 'IMAGE_SAVE_FILTERS' (types supported by 'array_to_imagefile')
* guiqwt.io: added support for "I;16B" images
* Sift/added image operations (+ various bugfixes/enhancements): resize and rotate (90°, -90°, H/V flipping, arbritrarily rotation)
* Sift: added run scripts + py2exe setup script + icon
* PanelWidget: added class attributes PANEL_TITLE and PANEL_ICON
* guiqwt.cross_section.CrossSectionItem: added method 'process_curve_data' (called when cross section data has changed instead of calling 'set_data' directly)
* Tools: added 'toolbar_id' argument to all tools deriving from CommandTool
* setup.py: removed the hard-coded -msse2 compile flag --> added extra options --sse2 and --sse3 as a replacement
* Added ImageStatsTool: show statistics on selected image item's rectangular area
* builder/images: added option 'interpolation' for all image item types (default=linear)
* builder/images: added option 'eliminate_outliers' for some image item types (default=None)
* Sift: added image cropping and flat-field correction features
* Sift: added average operation + threshold/clip features to image processing menu
* ImageMaskTool: now emits SIG_APPLIED_MASK_TOOL when mask is applied from defined shapes + other API details
* Sift: added support for DICOM metadata (shown as a dictionnary in a GUI-based editor)
* Sift: new embedded Python console with a proxy to manipulate signal/image data directly