Looking good! I tested out renaming and deleting but when I rename the old file stays and when I delete it closes the editor but the file is still there.

Didn't try this out, but feel free to merge whenever you think it's good!

Rename and delete are working much better now!

There are some quirks:

• Creating a file without a certain extension (for example test or test.h) always creates a folder. Ideally I think there would be separate new folder/file buttons.
• Renaming a file without a certain extension creates a folder. You can then do weird things like add files underneath this "folder" which is actually a file. A file should always be a file even if renamed regardless of the extension.
• You can add a file under a file (main.tf/test.md) which seems to cause the file to get ordered like a folder but the new file will not actually appear. This should probably be disallowed.
• Renaming a folder that has children causes a crash.
• Renaming a folder that has no children with a certain extension (like test.md) causes it to become a file. A folder should always be a folder even if renamed regardless of the extension.
• Sorting seems to be a bit random. If I add test it shows at the bottom then if I add test/test it shows up at the top.