Hel O'Ween

My solution for Mint: install the package from Ubuntu's archive: http://archive.ubuntu.com/ubuntu/pool/main/r/readline/libreadline7_7.0-3_amd64.deb After that, installation via `apt install hstr` works: ``` hh --version hstr version "2.0.0" (2018-08-28T13:30:00) ```