Tweaks + Optimisations + Major pathfind fix

Polish JumpToPos
add ENT.Term_Leaps ent variable
True and bots will leap/jump in arcs

Make JumpToPos have collision checks before jumping, no more head bumps

Major pathfinding tweaks
Fixed A* "closing" already explored and validated areas
Was a particularly nasty issue, causing lots of junk unreachable flags

New system that makes A* follow historic, expensive paths.
Lets bots path faster, by letting their a* confidently explore historic path corridors, leading to overall faster path generation, especially with hordes of bots.
Make bots really stick to their path if they generate an expensive one.

Vastly improve comments for ENT.IsFodder, .IsStupid, .HasBrains, .CanUseStuff

Don't yield in StartTask :(

Make bot's fists actually respect FistRangeMul
_Index optimize getDamageTracker stuff

Various csoldier AI tweaks/simplifications/fixes
Use a simple cache for the GetCoverStatusOfPos func

Small tweaks
err fix in hearing system
add compatabilityhacks for mapsweepers
err stomp for soldiers

Tweaks
+ Make Paparazzis have random bodygroups & skins. ( Community contribution )

Emergency merge!
FIX ERROR SPAM AND THE KLIENER INVASION!

More optimisations
Optimize terminator hearing a bit
Optimize handling transparent enemies

Dont create a shooting timer for fodder npcs

Yield way more often in the enemy, shooting, and reallystuck handlers

Err stomp???

error stomps

Small tweaks + mystery error stomp

err stomp

More yields, More optimisations
Yield like CRAZY in movealongpath if we're fodder!
Fix the reconstruct_path function causing pathfinding to break
Move OnPreCreated task call to always run after classtasks are setup
Yield way, way more in the csoldier base
And many other tweaks to csoldier base to make brainless ones cheaper

ENT:RunTask optimisations,
> cache "hollow" events with no callbacks

Fix wacky soldier aim when enemy is behind props