New upstream version 8.3.1~rc1

.github/workflows/docker.yml

CITATION.cff

binder/apt.txt

binder/postBuild

doc/development/rfc/version_numbering.md

doc/development/submitting/submitting.md

doc/howto_release.md

doc/infrastructure.md

doc/python/raster_example_ctypes.py

doc/python/vector_example_ctypes.py

docker/alpine/Dockerfile

gui/wxpython/animation/controller.py

gui/wxpython/dbmgr/base.py

gui/wxpython/gmodeler/frame.py

gui/wxpython/gui_core/mapdisp.py

gui/wxpython/gui_core/preferences.py

gui/wxpython/gui_core/widgets.py

gui/wxpython/image2target/ii2t_manager.py

gui/wxpython/iscatt/frame.py

gui/wxpython/iscatt/plots.py