Viro

Changes to effects:
-Shutdown syndrome now only affects limbs. Dead limbs do not feel pain.
-Adrenaline effect generates less hyperzine, since it was causing deadly OD.

Added distinction between contact and airborne viruses.

Contact viruses spread:
*  When infected mob touches someone (chance depending on protection)
*  When someone touches exposed bodypart of infected mob
*  Low chance of spreading when bumping into infected mob (depends on protection)

Airborne viruses spread:
* In 20% of breaths, in 1 tile range. Chance depends on worn gear (e.g. sterlie masks cuts down whole chance to 5%)
* On coughing. in 2 tile range.

Infection resistance towards different vectors is calculated differently.
Gloves help very well against contact diseases, but are useless against airborne.
Biosuits and spacesuits are good against airborne when worn with helmet, but useful only against contact otherwise.
Internals prevent airborne infection entirely.