Fix some issues reported by lintian

See merge request !1

Changes-By: lintian-brush
Fixes: lintian: uses-deprecated-adttmp
See-also: https://lintian.debian.org/tags/uses-deprecated-adttmp.html

Changes-By: lintian-brush
Fixes: lintian: out-of-date-standards-version
See-also: https://lintian.debian.org/tags/out-of-date-standards-version.html

Remove obsolete field Name from debian/upstream/metadata (already present in machine-readable debian/copyright).

Changes-By: lintian-brush

Changes-By: lintian-brush
Fixes: lintian: upstream-metadata-missing-bug-tracking
See-also: https://lintian.debian.org/tags/upstream-metadata-missing-bug-tracking.html
Fixes: lintian: upstream-metadata-missing-repository
See-also: https://lintian.debian.org/tags/upstream-metadata-missing-repository.html

Changes-By: lintian-brush
Fixes: lintian: uses-debhelper-compat-file
See-also: https://lintian.debian.org/tags/uses-debhelper-compat-file.html

Update to upstream version '2.0.3'
with Debian dir e56d1872f02149d39d01117e66d2d0abc4fffde6

Update to upstream version '2.0'
with Debian dir f10f81134eed1768c8d759c665efcb64cc908289

Update to upstream version '2.0~rc2'
with Debian dir 244416e7452849eca9c581adacf00a00f042d33c

Drop Update-infrastructure-files-to-latest-versions.patch
Drop Remove-the-tests-that-require-pytest-mpl.patch
Drop Change-requires-to-install_requires.patch

Closes: #896262, #896286