Hamstercage

When running `diff` on an empty file, an IndexError would occur.

What's Changed
* Report "binary files differ" by stblassitude in https://github.com/hamstercage/hamstercage/pull/6
* When target is a regular file instead of link list it with "!" by stblassitude in https://github.com/hamstercage/hamstercage/pull/7

New Contributors
* stblassitude made their first contribution in https://github.com/hamstercage/hamstercage/pull/6

**Full Changelog**: https://github.com/hamstercage/hamstercage/compare/0.2.3...0.2.4

Handle errors gracefully when reading the files to be diff'ed as UTF-8.

The sub-command `tag add` was not working correctly.

Update dependencies to current versions.

Instead of using the `-t` parameter, require the specification of the tag for the `add` and `remove` commands.