Version 4.43.0

Music packages have not changed since v2.4.42.0, no need to redownload.

#647: Re-add all styled versions of Separated Coop Checkpoint.
Removed subtle fade when swapping Funnel polarity. It didn't match with any of the actual effects.
Improve areaportals in Clean upward SP exit.
Altered exit doors and checkpoints to use NeedsAbsFizz chamber attribute, instead of
PortalGunOnOff. This way items can get the Absolute Fizzlers in the exit without the portal gun
changes.
Added a filter to all cube-fizzling fizzlers (except Absolute Fizzlers), allowing creating
fizzler-proof cubes and the like. Simply add the nofizzle:1 response context to the object.

Fix #1875: orientation of Clean door camera.
Fix Overgrown static non-block Stairs having incorrect panel positions.
Fix #4150: Paint Fizzlers not cleaning cubes that were prepainted with gel.
Fix #3671: Incorrect palette icon for Overgrown Signage item.
Fix P1 not restarting when you enter the elevator in preview mode.
Fix incorrect name and description for Absolute Fizzler package.
Fix duplicate description for Overgrown Gels.
Fix some bad optimisation in Overgrown SP entry elevator.
Fix Overgrown "staircase" entrance not opening worldportal in preview mode.
Fix #4247: Prevent portal bumping onto P1 ceiling Small Observation Room.
Fix internal dimensions for Clean Large Observation Room.
Fix #4263: 50s SP entrances having a few compile errors.
Fix #4264: 70s SP entrances having a few compile errors.
Fix 80s SP Lobby entrance not working.
Fix Overgrown Excursion Funnels and reversed funnels not being visible in published maps.
Fix positioning of P1 Coop corridors.
Fix #4266: Sendificator Slim not working in Clean, Overgrown, P1.
Fix #3960: Remake P1 Sendificator antlines to remove green tint.
Fix #4269: Old Aperture checkpoints not functioning.
Fix P1 Entrance 2 causing leaks.
Fix name and icon for Old Aperture Coop Spawn Room.
Fix fizzlers in 60s SP lobby Exits.
Fix #4110: Recompile signage frame props, remove duplicates.

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