Breaking: ES6 Upgrade (fixes: #13)

[joe-replin]

Update

• Removing favorite, unfavorite & modifying preferred statements
• ES6 Upgrade of all JS

New

• New verb accessed for resource clicks
• New verb preferred for visua11y clicks
• Adding iterative attempt numbers to question statements

Breaking

• This upgrade moves to use updated core imports instead of the redundant behavior prior to v5.19.1
• fixes #13

Testing

1. MUST have authorization credentials to connect to an established LRS. These credentials can be manually inputted into required/launch.html.
2. Enable the plug-in in config.json. See example.json.
3. Navigate through a vanilla course, checking that each statement is appropriately being recorded in the correct store within the LRS.

[oliverfoster]

What happened to this? It is definitely needed.

[joe-replin]

I was attempting to put my WIP within a PR. Didn't want people to think it was finished and I don't want to spam people with incessant emails. So I'm working within the branch first until I'm good & ready.

[oliverfoster]

Ok. Good plan.