Merge pull request #4016 from Baystation12/dev

0.1.7 Staging [3...2...1... LIFTOFF]
Added cryo suite to dorms.
Revert "Bygex - Regex implementation for byond."

This reverts commit a9bea16ac873c2b149294adf7dd49568ac5c5669.
Merge pull request #4054 from Zuhayr/feature

Adds cryo, reverts Bygex due to lack of .so
Fixes the nuke suit spawn proc.
Merge pull request #4056 from Zuhayr/feature

Fixes the nuke suit spawn proc.
Improvements to floors becoming dirty. They now become dirty over time instead of suddenly being really dirty at 50 steps.
Ghosts can see PDA messages.
De-clunking the revised dirt code.
Added checks so that space cleaner reagent and borgs can clean floors now too!
fix for accidentally deleted line.
Merge pull request #4060 from DJSnapshot/dev-freeze

Improvements to how floors become dirty
Merge branch 'dev' of https://github.com/Baystation12/Baystation12 into dev-freeze
Fixes for the Skrellian hardsuit helmet on-mob sprites.
Fixes #4058
Fixes #4050
Added "hide" verb to mousetraps, placing them on the same layer as hidden mice.

Triggered mousetraps and dead mice will be moved back to the top layer.

Monkeys will no longer move randomly while being pulled.
Fixed detective semiauto turning wrong caliber when screwdrived.
Fixes #4042
Allows gibs to be scanned for DNA.