Imagedata

* Ready for public distribution.

* Viewer: Key press 'w' will normalize window level/width to displayed slice
using a histogram normalization.
* Viewer: Key press 'h' will toggle display of text on display.
* Viewer: Display demographic and acquisition info in upper right and level corners.
Changed
* Support Python 3.12

Added
* Viewer: Display seriesDescription upper right.

Fixed
* Protected Series and Header objects for missing properties.

Fixed
* Fixed signed integer overflow in DICOMPlugin.write_slice().

Changed
* Major modification to Series class, removing the DicomHeaderDict attribute.