Guiqwt

Bug fixes:

* Fixed Issue 90 / ImageItem's pixels are now centered on their coordinates
* plot.SubplotWidget w/image related panels: simplify both pyplot and
syncplot.py test
* pyplot: fixed QApplication instance mgt issues
* pyplot/Figure.save: fixed Qt5 compat. issue
* io.load_items: fixed docstring

*Note*: v4.3.3 is functionally identical to v4.3.2 (translation file was missing in v4.3.2, hence the new release)

Bug fixes:

* Added build dependencies (fixes Issue 95)
* Fixed compatibility issue with Visual Studio 2015 and earlier
* Fixed builder functions for annotated circle and ellipse (bad arguments)
* Fixed default text color configuration for dark mode

Changes:

* Added "tests/loadsaveitems_json.py": JSON plot items (de)serialize test
(from CodraFT project,
<https://codra-ingenierie-informatique.github.io/CodraFT/>)

Bug fixes:

* `EditItemDataTool`: now show directly an `ArrayEditor` dialog box
(instead of calling the `oedit` object editor function)
* Fixed tests/syncplot.py demonstrating how the curve plot axis
synchronization feature works
* Fixed Issue 93 / tests/histogram.py: bins/log scale parameters did nothing

Bug fixes:

* SnapshotTool / Resize dialog: default width/height were floats instead of
integers (the dialog OK button was disabled until fixing those values)

Changes:

* Added "tests/plot_timecurve.py": dynamic plot widget example
* Curve markers: pressing "Control" (with "Shift") will hold marker visible
* Markers were not serializable/pickable as expected (like other shapes).

Bug fixes:

* (Annotated)PointTool: fixed behavior (adding point without moving before
unreleasing mouse button now works)
* Image visualization: fixed hard crash when zooming unreasonably inside a pixel
* FitDialog: fixed issue 64 - resetting XRange when button is unchecked
* Builder: fixed Issue 67 - when building curves with MATLAB-like syntax

Bug fixes:

* Fixed DICOM images support.