Library structure rewrite for angular 9 and ivy compatibility.

2.1.5

2.1.4

Merge pull request brtnshrdr#83 from wittlock/bugfix/fixes

Bugfix for broken dependency

Merge pull request brtnshrdr#66 from wittlock/master

Configuration for Esc-to-close cheat sheet help

Remove dist/ folder and point to correct npm files

Bump version numbers

Upgrade to 4.0.0-beta