Inkscape 1.0 (beta) drops `--file=FILE` and `--export-TYPE=FILE` command-line compatibility

Steps to reproduce:

Run long-established (in the build system of other SW) command akin to

inkscape --file=foo.svg --export-dpi=45 -C --export-png=foo-small.png

What happened?

Unknown option --file=foo.svg

What should have happened?

The command shall be accepted as it has always been :-)

Inkscape Version and Operating System:

Fedora Rawhide.

$ rpm -q inkscape
inkscape-1.0-0.beta.fc32.2.x86_64
$ inkscape --version 2>/dev/null
Inkscape 1.0beta1 (fe3e306978, 2019-09-17)

---

Relevant commit/change seems to be: https://gitlab.com/inkscape/inkscape/commit/408cb49b5559a81ea803df64bf58457a5dd4bf16?expanded=1&w=1

(notice that there's no --file substitute without any further commentary).

I couldn't find any remarks at https://wiki.inkscape.org/wiki/index.php?title=Release_notes/1.0 either.

Note that this is really an abrupt change that's going to break a lot of automation, hence I think it'd be highly advisable to maintain this command-line "API" compatibility throughout 1.x line, even if it would be, for instance, accompanied with a deprecation warning if that's indeed a desired direction.

Thanks for considering!