Compresses files using [Huffman coding](https://en.wikipedia.org/wiki/Huffman_coding).

On [The Great Gatsby in plain text](https://www.gutenberg.org/cache/epub/64317/pg64317.txt) on project Gutenberg, it achieves a 0.526 compression ratio when using a word size of two bytes. On an arbitrary RAW image, it peaks at .622 with a 32 bit word size and .645 with a 16 bit one.

To run with [Nix](nixos.org):
``` sh
nix run ".#" --experimental-features "nix-command flakes" -- compress < myFile > myFile.compressed
nix run ".#" --experimental-features "nix-command flakes" -- decompress < myFile.compressed > myFile-decompressed
sha256sum myFile myFile-decompressed
wc -c myFile.compressed myFile 
```

To run with [cabal](https://www.haskell.org/ghcup/):
``` sh
cabal run . -- compress < myFile > myFile.compressed
cabal run . -- decompress < myFile > myFile-decompressed
sha256sum myFile myFile-decompressed
wc -c myFile.compressed myFile 
```