Remove unnecessary constraints

See merge request !3

* Build-Depends: Drop versioned constraint on javahelper.

Changes-By: deb-scrub-obsolete

Apply hints suggested by the multi-arch hinter

See merge request !2

+ libcds-savot-java-doc: Add Multi-Arch: foreign.

Fix some issues reported by lintian

See merge request !1

Fixes lintian: field-name-typo-dep5-copyright
See https://lintian.debian.org/tags/field-name-typo-dep5-copyright.html for more details.

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

Fixes lintian: package-uses-old-debhelper-compat-version
See https://lintian.debian.org/tags/package-uses-old-debhelper-compat-version.html for more details.

Closes: #893344

* cull unreleased previous entries from changelog
* consolidate GPL-3 entries in copyright + append boilerplate

Fixed code formatting
Moved all test classes into test/
Removed empty tests