New update! Some new sprays, an entirely hilarious feature for using your friends as a bipod, and a couple fixes.
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Spray can
+19th Valkyrie
+19th Jotunn
+19th Medical red
+19th Medical white

Other
+Sponge feature to delete all those pesky sprays.
+Add D20's banana god to Zeus
+Ball Bipod (yes, you read that correctly. You can now use your battle buddy's nuts as a bipod now)
+An invisible cube for your balls when using aforementioned bipod

Fixes
+ODST sprays have wrong path on ultra random can
+Firemode of the spartan laser was not capitalized

OPAEX v17
Not a massive update, but it has some nice fixes and sprays.

Other
+Added addon checking system for units so they can verify who is using unknown sidemods.

Sprays
+19th's Wayfinder 2 logo
+19th's Hoplite 1 logo
+19th's Hoplite 2 logo
+Division 7 Logo
+Focht (in the chad can of course), remember tukkyid!

Bugfixes
+VTOLs all have bad texture paths due to OPTRE update, making them invisible. (Credit to venom for fix).
+Server keys added again.

Small update mostly for fixing the most commonly reported issues. It was a lot more work than you'd think.

Sprays:
+Added OPCOS logo
+Updated TCF Logo
+Added 19th's low-vis fenrir logo

Modules:
+Fixed glassing beam not respecting destruction percentage from module

Skeleton swapping:
+Fixed spartan swapping occurring on 6ft mjolnir sets.
+Fixed spartan swapping not working for everyone in a dedicated server.

Weapons and D20:
+Added Under barrel SRS magazine. All grenade launchers can be snipers now!
+Fixed D20 duplication bug.
+Disabled the carrier and destroyer events from the D20 list. They were too intrusive for gameplay and made it less fun.

Spartan Laser:
I rewrote the whole system for server-authoritative focus to make it easier. Note that I have zero confidence it will work with units that frequently change locality, such as AI swapping between headless clients.
+Fixed beam still existing after firing sometimes in mp.
+Fixed beam staying on weapon switch in mp.
+Fixed beam staying on corpses in mp.
+Fixed charging sequence not working in mp sometimes.

OPAEX V15!
This update is mostly about fixing some spartan laser issues.

Spray cans:
+Added Aleksandr Sergeyevich Kerensky to the chad can.
+Updated the 19th fleet can logos
+Added the grif approved spray to the 19th fleet can.

Spartan Laser Fixes/changes
+Made the spartan laser visuals work in multiplayer. Unsure if all bugs related to this were removed as I cannot test it myself.
+Added charge duration to the OPAEX_fnc_Extended_InitPost_splaser function to make it easier to have custom lasers.
+Increased the range to 2km. This also means the speed increased to 2km/s.
+Increased the speed of the impact submunitions from 200 to 350 m/s to increase penetration power.
+Increased the fired round's damage and indirect damage from 62.5 to 100.

Hotfix for possible JIP issue that prevents the charge sequence on the spartan laser.

OPAEX V14!
This update is all about the spartan laser.

Weapons
+Reworked the spartan laser.
+Added RGB spartan laser (script only access).
+Hid the old spartan laser. It is still in the code for the sake of compatibility.

Spartan Laser Rework
+Made the spartan laser charge when used.
+Made the spartan laser use the new arma laser function.
+Made the spartan laser support an RGB mode for your true gamer needs.
+Made the charge sequence abort when the gun is not in a firable state; It interrupts the charge when lowered.
+Make the gun sequence abort when free-falling.
+Made the spartan laser work on respawned players.
+Rebalanced the laser to make the laser hit infantry without overpenetrating, yet also blow up tanks with relative ease.
+Removed OPAEX_fnc_spawnShot.
+Removed OPAEX_fnc_spawnShotSplaser.
+Added OPAEX_fnc_getMuzzleOffsetFromWeaponProxy.
+Included a model and textures for the weapon from Mesa.

OPAEX version 13!
This update is mostly code, with the main feature being more spray can images. Unfortunately, I was unable to get the charging spartan laser ready for a beta release, so that'll be something to look forwards to in the next update.

Functions/Code changes
+Added offsets to all getWeaponPosition functions. They work even when rotated!
+OPAEX_fnc_GetSelectionPosition
+GetWeaponPosition functions now use OPAEX_fnc_GetSelectionPosition to find their position.
+GetSelectionPosition related functions now return selection relative positions, to give users more control on how they convert out of model space.
+Removed the incomplete grapple script that was unintentionally included in the previous update.
+Added various new functions to aid in terrain manipulation.
+Added OPAEX_fnc_Terrain_Circle
+Added OPAEX_fnc_Terrain_HalfCircle
+Added OPAEX_fnc_Terrain_Line
+Added OPAEX_fnc_Terrain_LineVertical
+Added OPAEX_fnc_TerrainFilled_Rectangle
+Added OPAEX_fnc_TerrainFilled_Circle
+Added OPAEX_fnc_TerrainFilled_HalfCircle
+Added OPAEX_fnc_Terrain_Alt
+D20s now use the CBA system for their fired handler, which should fix the rare double-execution bug.

Spray can stuff
+ODST Chad can
+Moved spartanjackwar to generic can.
+Added random to generic can.
+19th can
+Kilroy can
+Reduced spray cans from 1 to 0.1 mass.

Update 12.1. This is more of a hotfix for a few issues.

Added:
+OPAEX_fnc_flattenTerrain

D20 Stuff:
+Removed OPAEX_fnc_animateTexture prints to system chat.
+Fixed D20 debug mode not accepting blank forced scripts
+Fixed RBGMan's texture loop stopping due to a missing loop variable.
+Fixed several spawn commands failing with an incorrect reference to the independent side.

Update V12! This may as well be called the spray can update.
Vehicle adjustments
+Fixed VTOL Sparrowhawks being invisble.

Weapons
+Added D20 3GL
+Added D20 GL

Modules
+Added illumination bomb module

Other
+Fixed mod.cpp missing a semicolon on line 15.
+OPAEX_fnc_GetCurrentWeaponPosition
+OPAEX_fnc_GetPrimaryWeaponPosition
+OPAEX_fnc_GetSecondaryWeaponPosition
+OPAEX_fnc_GetTertiaryWeaponPosition
+OPAEX_fnc_Grapple_PullTarget
+OPAEX_fnc_InitGrappleSystem
+OPAEX_fnc_animateTexture
+OPAEX_fnc_animateTextureLooped
+OPAEX_fnc_asynchronousExecutionLoop. Try saying that three times fast.

Spray cans
+Made some spray cans (requires ACE to function. However, OPAEX shall not need ACE to run)
+Pre-war and Post-war UNSC Logos
+Innie fist
+Banana, Pog, Pirate, Pepe, and Knuckles bananas.
+OPAEX, A2S, Black Element logos.
+Dingus Element logo (only real chads will understand this one)
+Several chad images
+Gmod missing texture

The D20 section:
D20 Core methods
+OPAEX_fnc_D20Visuals_Party now uses multicolor confetti.
+OPAEX_fnc_D20_IsMagazineAD20 now checks both configs for D20s
+D20Visuals_BananaWall
+Removed the fired event handler printing in debug mode.
+Fixed bugs in OPAEX_fnc_D20_InitD20ScriptList that double-added scripts and overrode the master script array.
+Fixed a bug in OPAEX_fnc_D20_RandomSelector that didn't grab the correct list.
+Deprecated OPAEX_fnc_StringToFunction
If you don't understand these D20 fixes I'll rephrase: Custom D20s now correctly use their own script sets. I hope to see one of you chad developers out there make a custom D20 using my framework.

D20 Vanilla effects
+Better heal-grenade visuals
+Added D20Roll_RGBMan, or VR-man raves.
+Removed random spawn position from truck-kun

D20 OPTRE effects
+Buffed banana god by giving him double speed.
+Reduced banana god shotgun penetration to reduce overpen of infantry.

D20 OPAEX effects
+D20Roll_GlassingBeam

OPAEX V11.1 patch
Fixes:
+Fixed cryobomb effects being permanent When deleting the module as Zeus.
+Fixed disruptor bomb effects being permanent When deleting the module as Zeus.
+Fixed glassing beam effects being permanent when deleting the module as Zeus.
+Fixed missing key for OPAEX_Sparrowhawk.PBO

Module changes:
+Added configurable duration to glassing beam
+Added lightning to the disruptor bomb.

D20 stuff:
+Fixed drop gear event sometimes losing backpacks.