Fix result undefined

Update CHANGELOG

Update CHANGELOG

Release v2.1.2

- Weird duplicate items from #tabs filter will not show anymore if disabled #3
- Fix only_show_unopened_files_on_empty_window setting not working properly when enabled

Re-release v2.1.1

- Remove mnemonic added by PackageDev on generate
- Add menu items
- Improve dump stack command
- Disable clear cache command
- Add "Show Compass" in command palette

Update changelog

Apply bugfixes

- Cannot opening files initially but opening again will work.
- Crashing when there are sheets with empty selection
- Compass is deemed open even if there are no items to show

Update v2 - Stack Cache

- Compass will now cache the stack so it can be loaded again when Sublime restarts
- Filter #empty is now called #scratch
- Filter #type is now removed
- Builds a stack on all existing windows on load in a separate thread
- Fix when closing tabs does not go back to initial tab

Refactor Kinds