Quickfix for posibrain.dm , posibrains booting ghosts that try to join them. Credit to Zuhayr for the fix!
Merge pull request #2973 from Asanadas/master

Quickfix for posibrain.dm
Merge pull request #2975 from meyar/master

Map fixes and a PDA tweak.
Fix for security belts not holding all seven items if the total combined w_class of the items is over 14. They should now be able to hold seven of any items that fit in them.
Merge pull request #2977 from MagmaRam/master

Fix for security belts not holding all seven items sometimes
Bumping into firelocks in exosuit.
Merge pull request #2978 from Segrain/master

Opening firelocks for exosuits.
Runtime fix.

ZMerge was trying to combine lists without checking for existence.
Merge pull request #2981 from SkyMarshal/zas-cleanup

Runtime fix.
Fixes a piping error in chemistry
Chaaaaaange