CLI changes
==============
* Added a new `--download` command-line option to allow downloading HUD files without performing any updates.
* Added a new `--update` command-line option. Update all supported HUDs to the latest releases and then download only new archives.
* Removed no longer needed `--save` command-line option. Saving will be performed automatically during the update process.
API changes
=============
* Public method `HUDManager.getall()` will now only download HUDs without trying to update them.
* Public method `HUDManager.updateall()` will update all supported HUDs to the latest releases and then download only new archives.
Security
===========
* Switched to defusedxml for parsing XML files.
Windows-specific changes
=======================
* Updated Embedded Python to version 3.10.4.
* Updated PyInstaller core to version 5.0.1.
* Updated InnoSetup engine to version 6.2.0.
Other changes
=================
* Unified build scripts.
* Added YAML issue templates.
* Upgraded Doxygen manifest to version 1.9.2.
* Converted Fedora SPEC to 202x-era packaging guidelines.
* Updated documentation and manpage.