Tester text

See merge request KartKrew/Kart!603

Eggman Mark cinder fix

See merge request KartKrew/Kart!600

Follower angle lag + lookback

See merge request KartKrew/Kart!597

Trick threshold

See merge request KartKrew/Kart!599

Adjust steering lock after successful DI

See merge request KartKrew/Kart!602

* Show version/DEVELOP info on the title screen, not the top-level menu (necessary in advance of new-menus).
* Add TESTER/HOSTTESTER information to `version` command and title screen DEVELOP info.

* Allow colorisation types to not completely crowd each other out.
    * For example, it's possible for invincibility + grow to flicker Invincibility, Eggman mark, and grow colours if the conditions for each type of flash are true on different frames!

* This tilt is a *difference* between the axes, so a slight diagonal shouldn't intefere.

This value is closer to how the old value felt before the tracking was improved.

(not that it even uses the real color, buuut...)

(Why was angle being set again above this...)

- ANGLELAG lets you set how fast the followers swivel around. Default is 8*FRACUNIT, old behavior can be returned with FRACUNIT.
- Followers reverse their angle when you hold the lookback button.
- All lag values can't go below FRACUNIT instead of 1.

This reverts commit 0ce466e7.

This reverts commit 5ef78cbc.

(also removed the define replacements since didn't work)

Instead of letting it crash due to a NULL subsector later, let it crash earlier so I can see what is happening...

Fix HUD tracking with viewrollangle

See merge request KartKrew/Kart!593

Fix lookback interpolating

See merge request KartKrew/Kart!596

Bring back camera prediction

See merge request KartKrew/Kart!592