save data for blocks with more than a single component

Set dX to zero in hedgehog walk routine to prevent unexpected changes in X coordinate in certain conditions

add wind to physics processor

implement iteration with tags

Fix build

Prevent AI from flooding +L/+R messages

Set dX sign early so jump calculations always get correct value

remove winutils

allow registering zero-sized types

Change credits for Hungarian translator

Allow playing Racer without invulnerability

ignore overflow in point norm computation

avoid time multiplication when not skipping ticks

remove velocity check

add gravity