Fix some issues reported by lintian

See merge request go-team/packages/golang-github-armon-go-metrics!1

Fixes: lintian: out-of-date-standards-version
See-also: https://lintian.debian.org/tags/out-of-date-standards-version.html

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


Fixes: lintian: upstream-metadata-missing-repository
See-also: https://lintian.debian.org/tags/upstream-metadata-missing-repository.html

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

Update to upstream version '0.3.0'
with Debian dir caabaf3bfc6e3d5555f20a6dd0203a062c6ed213

Update to upstream version '0.0~git20190430.ec5e00d'
with Debian dir 7a452feee867631e9531994874bb2afad0a6261e

Update to upstream version '0.0~git20180917.f0300d1'
with Debian dir e5ecbffc068158d915eb94d5ae1de72d55577f45

Upstream version 0.0~git20171117.6c3acc97

with Debian dir 37ad44149f66e284c0f7077824f15511f3c1a6fc