Provide Helper Functions for Encoding/Decoding Input/Output

[wikiwong]

Currently it's very verbose to convert raw binary to JSON. It must be decoded to a string first (unless there is a way to go directly to JSON)

example code:

JSON.parse((new TextDecoder).decode(vowelsCounted))

[chrisdickinson]

Addressed in #21!

[chrisdickinson]

Fixed by #21!