hdrop: 0.4.4 -> 0.5.0

[Schweber]

add hdrop to Changelog

Description of changes

Things done

• For new programs

  • [ ] Add the program to the README table, with yourself as the maintainer
  • [ ] Add a README for the program itself
  • [ ] Add Makefile (and Nix derivation optionally, otherwise @fufexan will do it)
  • [ ] If the program is a script, add it to the CI checks matrix

• For changes

  • [x] Add changes to the CHANGELOG