- Update to 2.4.4
## Changes
* Removed support for Python 3.6 (EOL since December 2021)
## Enhancements
* Added attribute alphabetic (#1634)
* Added attribute json_key (#1648)
* Added value validation for numerical VRs, add type validation
for all validated VRs (#1414)
* CLI commands now accept pydicom charset test files and CLI help
shows Python Version (#1674)
* Added support for Python 3.11 (#1658)
* Added ISfloat to allow non-strict reading of existing files
with float IS values (#1661)
* Improved speed of creating and accessing highly nested
structures (#1728, #1734)
* Switched to a pyproject.toml build process (#1792)
* Updated DICOM and UID dicts to DICOM 2023b (#1803)
## Fixes
* Fixed length validation of DS values with maximum length
without a leading zero (#1632)
* Increased download speed with progress bar for test data
(#1611)
* Fixed crash due to invalid private creator (#1638)
* Fixed extremely long BytesLengthException error messages
(#1683)
* In codify, ensure unique variable names for DICOM keywords
repeated in sequences, and handle unicode characters correctly
(#1670)
* Fixed handling of some invalid values in to_json_dict() if
suppress_invalid_tags is set to True (#1693)