* Serenity changed to proper medical exosuit.
Serenity tweaked to be a medical subtype, weapons cannot fit in universal slots.
Serenity weapon slot converted to a hull slot.
Exosuit punching converted to general ability, if melee_can_hit is TRUE by default.
* Cleanup.
Move HuD management to /obj/mecha/medical
* dedent??
* Fixfix
* Jumpjet