Hydrilla

raise a more informative error when a file referenced from index.json is missing

properly handle percent-encoded characters in .deb file names

add missing english translations and verify message texts of raised exceptions in tests

support piggybacking on APT packages

use pyproject.toml for pytest configuration and move all tests to tests/ directory

properly raise error when REUSE is needed but not installed

add support for --version option

don't include schema patch version number in generated instances

update schema versions to 1.0.1

fix "no translation file found for domain" error