add notalive event
use notalive for quadballs
pass the entity index in preannounce, preitemspawn, itemspawn events
refactor damage events: event dodamage (damage calculation), damageeffects (statistics, dead, push...), damaged (notification at end)
{engine,server}.sendservmsg typo
allow modifying the ent on (pre)announce
fix ents.delent
workaround missing break-on-error of the lua debugger
fix returns of ents.delent