Fix some issues reported by lintian

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Fixes: lintian: out-of-date-standards-version
See-also: https://lintian.debian.org/tags/out-of-date-standards-version.html

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

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

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

Changes-By: lintian-brush
Fixes: lintian: insecure-copyright-format-uri
See-also: https://lintian.debian.org/tags/insecure-copyright-format-uri.html

Changes-By: lintian-brush
Fixes: lintian: mismatched-override
See-also: https://lintian.debian.org/tags/mismatched-override.html

Gbp-Dch: ignore

All external privacy-breech warnings are optional and configurable
which are not used by default so no fix will be applied.

Closes: 896114

Gbp-Dch: ignore

Closes: 869693

Update to upstream version '0.7.12'
with Debian dir 20dd4225e43f96a942265c085bbaeae0c3028e88

Closes: 839633
Thanks: Chris Lamb <lamby@debian.org>

Gbp-Dch: ignore

Gbp-Dch: ignore

alabaster (0.7.8-1.1) unstable; urgency=medium

  * Non-maintainer upload.
  * Drop python2 support; Closes: #936114

Remove unnecessary constraints

* Build-Depends: Drop versioned constraint on debhelper.

Changes-By: deb-scrub-obsolete

Upstream version 0.7.8

Upstream version 0.7.7

Set priority to optional.

This package cannot be priority: extra because Sphinx depends on it.

Demote sphinx from Depends to Suggests.

To avoid circular dependency between alabaster and sphinx.
Closes: #783794.

Upstream version 0.7.6