Implement hints
Implement expanding hints
Fix @docs highlighting

This lets you view hints by selecting entries in a @docs list.
Fix type linking

This was catching "e" from Basics
Handle imports and modules in hints
Set a maximum size for expanded hints
Fix some hint bugs
Fix qualified types
Show declaration for module hint
Prefer types/values over modules for hints (e.g., Time.Time)
Add syntax hints
Use black instead of gray in hint summary
Fix empty parse errors
Remove a duplicate word in syntax hints
Implement hints for qualified imports
Remove help keyboard shortcuts (resolve conflicts)
Update docs.json from http://library.elm-lang.org/catalog/elm-lang-Elm/latest/docs.json
Add "Built-in syntax for…" to syntax hints
Add hints for data constructors
Add shortcut and menu item for opening documentation for the current hint