🐞 Clicking disclosure button next to folder doesn't animate open

[austincondiff]

When clicking the disclosure button next to a folder, it doesn't animate open but it animates closed. It needs to animate open as well.

[lukepistrol]

To learn more about current state see #61

TLDR: Doing it the right way (from an SwiftUI perspective) comes with major performance losses due to reloading of all files when selecting a file (even collapsed ones). The current state does not render collapsed file items.