* Create preview window instead of using quickfix list
This removes from us burden of providing formatting for content as this
is now simple as setting proper filetype.
* Create custom filetype for preview window
This will allow users to provide their own mappings and features in
hover window easily.
* Add proper statusline for LSP Hover
* Guard and undo_ftplugin
* Support all LSP hover syntaxes
* Wrap silent aucmds in augroup
Prevents stacking up multiple.
* Fix function signatures
Add ! and/or abort.
* Fix syntax and variable name typo
* Use robust equality comparison
* The == operator behaves differently depending on 'ignorecase'.
