v9 changelog

**v9 (29th April 2024):**

* Chapter 4: Move Photon Drive before Car Engine and add an Insight.

* Chapter 8: Re-arrange Advanced (Light Hurting Service 1 and 2 earlier, Skip/Airdodging/Impossible? earlier).

* Chapter 9: De-cheese Fuzzy Parkour.

* Custom elements; Fixed that heaviness/strength modifiers read the wrong variable.

* Custom elements: Inert/Mimic robots can now hold down crate goals. (They also, correctly, don't animate heavy/light goals activating as they cannot take them.)

* Community Levels: Buffs to Campfrost [VAR2] and Durability?. Added Eau de Null, Fuzzy Parkour [VAR1], Heavy Moving Service [VAR1-3], Light Moving Service [VAR1-2], Parity Drive and its Remix, Lightspeed Quarry, Mail-In Parasite and Sinkhole.