Alternate mechanism to identify an Evernote view
I realized that there is already a setting, $evernote, that is set on
views created by Evernote. It wasn't getting set for new notes,
however. This change sets the setting for new notes as well, then
fixes the is_enabled for the insert links command to use that instead.
Ability to open links to notes
A text command that opens the note pointed to by the link currently
under the cursor.
Open link command is_enabled and is_visible implementation
Better discoverability for open linked note command
I felt like the 'Open linked note' command would be more discoverable
if it was visible but disabled when on an Evernote note, and enabled
when the cursor is on a link
List linked notes command
A command that lists all the linked notes in the current note,
allowing you to open them from a quick panel.