Fix some issues reported by lintian

See merge request !3

Fixes: lintian: debian-changelog-line-too-long
See-also: https://lintian.debian.org/tags/debian-changelog-line-too-long.html

Fix some issues reported by lintian

See merge request !2

Fix some issues reported by lintian

See merge request !1

Fixes lintian: out-of-date-standards-version
See https://lintian.debian.org/tags/out-of-date-standards-version.html for more details.

Fixes lintian: debian-changelog-has-wrong-day-of-week
See https://lintian.debian.org/tags/debian-changelog-has-wrong-day-of-week.html for more details.

Fixes lintian: debian-rules-sets-dpkg-architecture-variable
See https://lintian.debian.org/tags/debian-rules-sets-dpkg-architecture-variable.html for more details.

Fixes lintian: upstream-metadata-file-is-missing
See https://lintian.debian.org/tags/upstream-metadata-file-is-missing.html for more details.

Update to upstream version '1.6.37'
with Debian dir 5f0b7e6c5c0aed05692fde7a67af04a184bffa68