Fix some issues reported by lintian

Fix some issues reported by lintian

• Trim trailing whitespace. (trailing-whitespace)
• Set upstream metadata fields: Bug-Database, Bug-Submit, Contact, Repository, Repository-Browse. (upstream-metadata-file-is-missing, upstream-metadata-missing-bug-tracking, upstream-metadata-missing-repository)
• Update standards version to 4.6.1, no changes needed. (out-of-date-standards-version)
• Set field Upstream-Contact in debian/copyright.
• Remove obsolete field Contact from debian/upstream/metadata (already present in machine-readable debian/copyright).
• Update standards version to 4.6.2, no changes needed. (out-of-date-standards-version)

Debdiff

These changes affect the binary packages:

[The following lists of changes regard files as different if they have different names, permissions or owners.]

Files in second set of .debs but not in first

-rw-r--r--  root/root   /usr/lib/debug/.build-id/9d/c4a664ca7101917f9a62a2a8aba6bea886d6d1.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/db/9c555681d63d5fd2302348ccbf6936d61eddc7.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/e8/91431f749deb1ce6aeeddbe4a7b78dee240a49.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/12/d9a75b72f91cb99133c760ea8eb74dca1d274f.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/a1/b48018f61ff142540b19d7ac7ef14579485f3d.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/a9/271dba603d0c2d40e3a2f0c5cd45dd97b91cbe.debug

No differences were encountered between the control files of package **gir1.2-handy-1**

No differences were encountered between the control files of package **handy-1-examples**

Control files of package handy-1-examples-dbgsym: lines which differ (wdiff format)

• Build-Ids: a9271dba603d0c2d40e3a2f0c5cd45dd97b91cbe db9c555681d63d5fd2302348ccbf6936d61eddc7

No differences were encountered between the control files of package **libhandy-1-0**

Control files of package libhandy-1-0-dbgsym: lines which differ (wdiff format)

• Build-Ids: 12d9a75b72f91cb99133c760ea8eb74dca1d274f e891431f749deb1ce6aeeddbe4a7b78dee240a49

No differences were encountered between the control files of package **libhandy-1-dev**

Control files of package libhandy-1-dev-dbgsym: lines which differ (wdiff format)

• Build-Ids: a1b48018f61ff142540b19d7ac7ef14579485f3d 9dc4a664ca7101917f9a62a2a8aba6bea886d6d1

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This merge proposal was created by the Janitor bot, and it will automatically rebase or close this proposal as appropriate when the target branch changes. Any comments you leave here will be read by the Janitor's maintainers.

Build and test logs for this branch can be found at https://janitor.debian.net/lintian-fixes/pkg/libhandy-1/c48f7411-a373-498d-8d66-1781704a760a.