Adds unit testing (just for the trie for now)

Consolidates to node-fetch 2.6.7 as Octokit requires v2

Moves eslint ignores into rc file
 Removes unused dev dependency

Giving up on better else/catch/finally formatting -- can't fight anymore
Switching to tabs for better accessibility
https://twitter.com/sh4na/status/1146837957200027648

Changes from out to dist
Adds size-plugin (commented out for now)
Adds image cache to improve bundle performance

Uses webpack for all of it