Organize palette into groups

[BeckmaR]

According to Miller's Law I've read about in this medium article, wikipedia, humans can only organize / hold 7 ± 2 objects in memory at a time. Thinking about this, I was looking at the statechart palette, which currently contains 12 items, and thought we could maybe group the tools in it by using horizontal lines or something, maybe even titles for the group? The groups could look like this:

• Transition
• States and Regions
  • State
  • Region
  • Composite State
  • Orthogonal State
• Entry States
  • Entry
  • History
  • Deep History
• End States
  • Final State
  • Exit State
• Flow Control / Pseudo States ?
  • Choice
  • Synchronization

This way, we'd have 5 groups with no group containing mor than 4 sub items, which would be ideal.