* Fixed a custom puzzle only bug where Hatch and AutoGrate could be pushed by a stack of 2 or more crates. (They are now infinitely heavy.)

* Fixed a custom puzzle only bug where crates could be swapped onto NoCrate.

I also added three new custom puzzles made by Neonesque to https://github.com/Patashu/Swimming-in-Crates/wiki - Volcano Dive, Buoyancy Lock and Freefall.