Update 0.4

Launcher

Check if it has write permissions before applying an update
- This is probably why the auto-updater does not work for some people
Significant memory & processing optimizations

The spawner is now much more stable, robust, stronger, faster, smarter and BETTER.

Here's some details:

Abyss items now spawn.
You can now spawn abyss props, such as chests and coffins!
Assets are now loaded by the spawner.
Added an internal queue so it only spawns the desired actors when the game can.
The spawner now runs in the game thread.
- This fixes ALL those random crashes that happened when you spawned some items (e.g. game crashing when you only spawned two swords).
Added Long Falchion T3.
Removed Cuirass A T1 as it no longer exists.

Fixed menu toggle key not working on Linux.
Updated Windows SDK.
Raised the maximum strength multiplier to 10.
Added a Linux guide (thanks to digitalyeti).
Now all player modifiers in the arena are re-applied constantly instead of just the start of a fight.
Added mouse buttons support.
Added Destroy All Willies.
- Option to only destroy dead willies.
- Option to disintegrate.
Added Clear Blood.
- You can set the amount of blood to be cleared.
Added Toggle Game Paused.
- This can be used in Photo Mode to unpause the game.
Added Infinite Consciousness.
- You can't be knocked out.
Added No Kick Cooldown.
Added No Pain.
- This could be taken as a semi-invulnerability.
- You can only die if your head/neck is damaged enough.
Added Enemy No Pain.
- Same as No Pain but it's only applied to other Willies.
Revamped user interface.
Added key conflict warning to choose to either replace, keep, or remap.
Added Adjust Body Tonus option in Strength Multiplier.
- This allows you to set your strength very high without constantly losing your balance.

Important performance improvements have been made.
Optimized key handling system memory & processing .
Most calculations are now performed at compile time, so your PC has to do less work.

I've made so many changes that I will just put some comparisons (at 60 FPS)

Hooks are now up to 900% faster. This runs on every frame of the game.
The logger is now ~90% more efficient.
Function parameters (the config popups) are now much more responsive and efficient.
Speaking of only memory management (when the mod communicates with the game), about ~5.25 MILLION less calculations PER SECOND (depending on the situation) as there's now address-caching.
About ~21K less calculations per second only for the UI.
Menu rendering is now ~70% more efficient in general.
Faster startup.

And there's much more.
Those of you who have a low-end PC will definitely notice it.