Update to egui 0.31

[drewrip]

Hi all,

Changes

• Update equi to 0.31.1
• Update miniquad to 0.4.8
• Make the run_ui param a FnMut
• Switch out some deprecated function names (swapped them one for one)
• Handle the new Vec of commands in PlatformOutput that are included in place of copied_text and open_url

This PR duplicates a couple of the changes from #78.

Questions

• I removed the =... from the miniquad version, does this need to be included still?
• Housekeeper for a new release needs to be done

Please let me know what may be missing