V8.22.1

Fixes

• #589 Portal physics improvements:
  • Walking or sprinting through a portal at low speed now feels natural — no more catapult, the speed you put in is the speed you get out.
  • The horizontal momentum boost after a portal teleportation no longer occasionally fizzles out, so consecutive portal jumps reliably keep their flight.
  • The in-game notification of new plugin versions now correctly fires whenever a newer release is available.
  • Two floor portals placed flat on the ground now reliably yo-yo a falling player back and forth without occasionally getting stuck on landing.