Lede 2021 data module

Clone two repos

Use the first repo to keep up with changes I make and the second to do the exercises.

1. Directly clone this repo so you can pull in changes from answers/ and lessons/ and new exercises/ templates.
2. Then fork this repo to create your personal repo to make changes in the exercises/ folder. This is the only folder you'll need to make edits to. Copy-and-paste exercise templates you have not completed from repo 1 here.