Reorganized graphics and sprites folders (sounds, sprites and models will take some more work)

Updated README.
Began working on gore system.
Removed idle animation on Minigun, that vertex wobble was getting on my nerves.
Another OptiPNG pass.

Readme.md

@@ -45,12 +45,13 @@ This mod requires a recent GZDoom devbuild (g3.6pre-31-gd965c9aa7 or later).
    - "Instant Rocket" mode toggleable with reload
  - Scaling/Customization options for the HUD
  - UT-like player movement physics
+ - Visual recoil affecting aim (improved A_Swing from Soundless Mound, can be
+   toggled)
 
 ## In progress
 
  - General polishing, bugfixing and rebalancing
  - Add some more effects
-   - Visual recoil affecting aim (time to recycle SM's A_Swing once again)
    - Lava/Slime footstep sounds?
  - Additional model optimization and cleanup (optional, not needed for 1.0)
    - Trim out unused animations (this one is going to be very time-consuming)
@@ -60,20 +61,20 @@ This mod requires a recent GZDoom devbuild (g3.6pre-31-gd965c9aa7 or later).
      be easily noticed when using invisibility)
    - Recenter the backpack mesh (it was a complete hack job to begin with)
  - UT gore system (toggleable)
+ - Change the way inventory items are dropped to be more UT-like (using the
+   freshly merged Inventory.OnDrop feature)
 
 ## Future plans
 
- - Change the way inventory items are dropped to be more UT-like, this will
-   require GZDoom changes
  - Add ammo counters to Pulsegun, Minigun, Flak Cannon and Rocket Launcher once
    scripted textures are implemented
  - Add player models once GZDoom gets a well deserved model animation system
    overhaul (at the moment this would require a monumental amount of work in
    the current state-tied system)
  - Add weapon attachment support to player models when that is also added in
- - Migrate RandomSpawners to CheckReplacement
  - Unreal 1 weapons mod and maybe also a monsters mod
- - Port some of my UT weapon mods
+ - Port some of my UT weapon mods (and maybe also some of my personal faves by
+   others, such as Psi Weapon Dreams)
 
 ## Known bugs
 
@@ -83,7 +84,7 @@ This mod requires a recent GZDoom devbuild (g3.6pre-31-gd965c9aa7 or later).
    even fix this)
  - Biorifle sludge doesn't handle 3d floors (especially sloped ones) properly.
    This is due to the unavailability of 3D floor data on ZScript and will be
-   fixed once 3D floors are exported to scripting
+   fixed once 3D floors are exported to scripting (still waiting on that PR)
 
 ## Known bugs that are not this mod's fault