December 2015 Update

An update has been released! This update includes a lot of exploit, crash and Half-Life 2 campaign fixes, as well as other minor bug fixes and Lua API improvements. Thanks to the following people for helping us out and reporting dangerous exploits: Willox, Leystryku, Python1320, MeepDarknessM/Meepen and ogniK. And thanks to everyone who helped testing the update and reported bugs/problems. As usual, servers will need to be restarted. The update will be automatically downloaded when you restart your game. You can check out the full change log below:

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Features

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Added localization for leafblower

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Improvements

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Optimized menu map retrieval
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Clamped physgun color to above 0

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Fixed

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Fix utf8.len() for empty inputs
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Fixed utf8.codes to abide to Lua 5.3's implementation
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Fixed utf8.force dying on empty input
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Fixed GM:AddDeathNotice's incorrect internal parameter naming

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Removed

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Removed old test file

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Features

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Added new TF2 map prefixes

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Improvements

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Updated Bouncy Ball & NetworkVar dupe support

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Fixed

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Fixed Singleplayer crash with Light Tool
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Fixed Saves/Dupes tab exploit

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Improvements

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Updated language files to be gender neutral

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Fixed

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Fixed instant defusal exploit

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Features

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Added gameui_show_dialog, buildcubemaps, voice_ and some snd_ commands to blocked cvar list
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Added support for L4D1 & Retail Black Mesa Source maps
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Added maps/*_particles.txt for HL2:EP2 maps
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Added new TF2 map icons and a few L4D1 map icons
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Added menu_cleanupgmas that cleans up unused .gma files
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Added ACT_HL2MP_SWIM_IDLE & ACT_HL2MP_SWIM to Lua
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Added new soundscript stuff from TF2 update
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Added 2 new parameters for Entity.RestartGesture - autokill=true, addIfMissing=true
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Added 6 missing silkicons
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Added cfg/mapcycle.txt to stop invalid map version spam
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Added -noworkshop command line parameter
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Added possible ragdoll related physics crash prevention/fix
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Added support for Steam game server accounts
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Added font name to the "There was an error creating the font!"
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Added Vehicle.IsValid - returns whether the actual VEHICLE is valid or not
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Added Vehicle.SetPos( vector ) - Actually working SetPos for vehicles
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system.IsWindowed
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input.LookupKeyBinding
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ENT:FireAnimationEvent
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ENT:HandleAnimEvent
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CNavArea.SetAttributes
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CNavArea.GetCostSoFar
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CNavArea.ComputeAdjacentConnectionHeightChange
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CNavLadder.GetLength
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navmesh.IsLoaded
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navmesh.SetMarkedArea
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navmesh.GetMarkedArea
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navmesh.SetMarkedLadder
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navmesh.GetMarkedLadder
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navmesh.GetEditCursorPosition
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navmesh.Reset
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navmesh.Load
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navmesh.Save
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CLuaLocomotion.IsAreaTraversable
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CLuaLocomotion.GetMaxJumpHeight
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PathFollower.ResetAge
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PathFollower.MoveCursorToClosestPosition
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PathFollower.GetHindrance
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PathFollower.GetCursorData
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PathFollower.GetCurrentGoal
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PathFollower.FirstSegment
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PathFollower.LastSegment
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ismatrix
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halo.RenderedEntity
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Entity.IsPlayingGesture
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Entity.AddGesture
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Entity.AddGestureSequence
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Entity.AddLayeredSequence
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Entity.IsValidLayer
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Entity.GetLayerDuration
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Entity.SetLayerDuration
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Entity.SetLayerPriority
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Entity.RemoveGesture
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Entity.RemoveAllGestures
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Entity.SetLayerCycle
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Entity.GetLayerCycle
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Entity.SetLayerPlaybackRate
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Entity.SetLayerWeight
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Entity.GetLayerWeight
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Entity.SetLayerBlendIn
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Entity.SetLayerBlendOut
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Entity.SetLayerLooping
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Entity.StopAndDestroyParticles
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Entity.StopParticlesNamed
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Entity.StopParticlesWithNameAndAttachment
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Weapon.GetWeaponViewModel
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Weapon.GetWeaponWorldModel
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Weapon.GetWeight
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Weapon.HasAmmo
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Weapon.AllowsAutoSwitchTo
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Weapon.AllowsAutoSwitchFrom
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CreateParticleSystem
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CNewParticleEffect.IsValid
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CNewParticleEffect.SetControlPoint
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CNewParticleEffect.SetControlPointOrientation
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CNewParticleEffect.SetSortOrigin
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CNewParticleEffect.GetEffectName
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CNewParticleEffect.StartEmission
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CNewParticleEffect.StopEmission
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CNewParticleEffect.GetOwner
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CNewParticleEffect.AddControlPoint
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CNewParticleEffect.StopEmissionAndDestroyImmediately
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Added CNewParticleEffect.__tostring()
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Added CNewParticleEffect.IsFinished
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Added CNewParticleEffect.IsViewModelEffect
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Added CNewParticleEffect.SetIsViewModelEffect
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Added CNewParticleEffect.SetControlPointEntity
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Added CNewParticleEffect.SetControlPointForwardVector
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Added CNewParticleEffect.SetControlPointRightVector
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Added CNewParticleEffect.SetControlPointUpVector
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Added CNewParticleEffect.SetControlPointParent
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Added CNewParticleEffect.GetHighestControlPoint
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Added CNewParticleEffect.GetAutoUpdateBBox
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Added CNewParticleEffect.Restart

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Improvements

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Made the "DirectX Out of Date" message open the Support webpage and changed its text
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Updated Awesomium to 1.7.5.1
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PathFollower.Compute( pos, nextbot, function ) now has a third paramter - function( area, areafrom, ladder, elevator, length )
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input.LookupBinding() now has a second parameter - exact
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net.ReadData no longer tries to read 0-length or negative length data
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sv_logsdir can no longer be used to write any file with any extension anywhere on your PC
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file.Remove no longer can delete any file on your PC in menu state
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Updated net_graph, sv_log(sdir), Orange Box .pcf particle system & bunch more things to their latest TF2 version
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Updated All NPC/AI weapons except for Crossbow
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Increased precision of integers for util.KeyValuesToTable
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Enabled a some EP2 Alyx stuff - Entering Jalopy, etc.
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Entity.RestartGesture() is now serverside only ( It never did anything on client )
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Entity.SetWeaponModel()'s Weapon argument is now optional
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Improved AI player detection in multiplayer ( It used to detect the last player on server, now properly detects the closest one )
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Updated propdata.txt to contain Episodic stuff
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Updated Steamworks API to latest version
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Updated localization files
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Moved some files from garrysmod.vpk to fallbacks.vpk ( HLS gibs, Alyx Gun epsodic sounds )
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Some of gravity gun convars are no longer cheat only
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Moved GetConVarNumber and GetConVarString to Lua for better performance
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Ground speed for NPCs now takes model scale into account
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Slightly improved player movement on moving props so they are less likely to be ejected
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Moved some steamworks.* Lua functions to ISteamUGC
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Entity.CreateParticleEffect() now returns the particle object it creates

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Fixed

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Fixed Vehicle.IsBoosting crashing the game when used on a seat
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Fixed physenv.AddSurfaceData only working once per map
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Fixed TF2 .nav files crashing the game on map load
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Fixed GetSaveTable() not properly handling some entity fields
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Fixed RPG sound spam #2
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Fixed triggerable soundscapes being removed when cleaning up the map
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Fixed combine mines not detecting players in Single Player ( And player in the last player slot in multiplayer )
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Fixed util.TraceLine and Entity:FireBullets not hitting player hitboxes outside of their hull if there is a prop behind said hitbox
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Fixed gravity gun not calling OnFailedPhysGunPickup on any entity
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Fixed not being able to grab a Magnusson Device from Jalopy's back
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Fixed Jalopy's radar and added multiplayer support
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Fixes d3_breen01 map getting stuck
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Fixed Combine Mine leaving looping sound behind if removed while the sound is playing
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Fixed a bug with Bugbait and Grenade weapons where you can have both stuck in unusable state
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Fixed SF_TRIG_TOUCH_DEBRIS not working in any trigger entity
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Fixed Weapon.GetActivity() not returning any values
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Fixed unhandled usermessage 21
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Fixed scripted entity names being restricted to 32 characters. ( Now restricted to 64 )
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Fixed Player:GetEyeTrace not working correctly with lag compensation
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Fixed prediction errors when walking or attempting to sprint while crouched
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Fixed particle systems not obeying some attach types correctly
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Fixed scenes not playing in some cases
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Fixed some issues with player movement prediction
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Fixed a client crash issue with some ragdoll models ( unreasonable position )
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Fixed some things printing twice on Linux srcds
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Fixed yet another DDoS exploit
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Fixed some DoS exploits having to do with server log output
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Fixed a security exploit
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Fixed splitpacket server crash exploit
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Fixed net library server crash exploit
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Fixed yet another server crash exploit
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Fixed CreateMaterial exploit
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Fixed Player.Say exploit
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Fixed an exploit/a bug that allowed people to get the "Play X days/months" achievements faster ( or slower )

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Removed

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Removed Panel.OnMousePressed method
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Removed RawConsoleCommand
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Removed the 8192 .lua file limit for singleplayer. (The limit still exists for multiplayer)
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Removed the 20 character addon name limit for engine.GetAddons()
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Removed soundscapes from fallbacks, they are all shipped in garrysmod.vpk now
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Got rid of unnecessary Steam.dll dependency