Language bars, key-bindings, and character compositions

This provides up to three ways to easily enter the special characters of a programming language into pretty much any input field on any webpage.

Adapted from github.com/ngn/apl/tree/master/web.

Information and usage instructions

APL: abrudz.github.io/lb

Jelly: abrudz.github.io/lb/jelly

05AB1E: abrudz.github.io/lb/05ab1e