Better Command Block UI

Fixed:

• Selection overlay inverts the colour of text below now

Added:

• Automatic scrolling when moving the cursor or typing outside of view
• Configurable wraparound for long lines
• "Tools" Side window, featuring:
  • Config editing for wraparound, scroll speeds, indentation steps, string formatting
  • Tool for quickly pasting fractions of 2*Pi (up to 16ths)