Vertical Tabs v0.16.2

🎉 What's New:

• Improved UI & UX: The old "new tab" button has been replaced with a plus icon in the group toolbar. Creating new tabs no longer causes annoying content shifts (Credit: @DovieW) (#173).

🐛 Bug Fixes:

• Resolved a critical issue where folded groups would become invisible in the UI.
• Performance improvements.