Change to only pull firebase logic we need and bump version.

Remove dependencies

Release 7.0.1

Add stronger typing on list item change types. Major release because …

…it's now bound to angular-point >= 6.5.0

Use peer dependencies instead of standard dependencies so we can shar…

…e dependencies with host application.

Minor bump to expose necessary type defintions.

Update data structure of pressence object to minimize overhead when p…

…ulling down session info for all users. Loging have been moved out into logs structure.

Update presence tracking to include historical logs and route change …

…history.

Fix bug identifying correct root path when using child selector.

Move to modern version of firebase and angularfire. Breaking changes …

…and move to 6.0.0.