add setShader, setShaderfuck and clearShaderfuck

MANUAL.md

@@ -288,11 +288,14 @@ local sprite = Sprite('docs/uranium.png')
 local shader = Shader('src/shader.frag') -- returns a RageShaderProgram
 ```
 
-Afterwards, call `SetShader` on your actor. **Use `__raw` on the shader, else it'll pass in the proxy object and break!!!**
+Afterwards, call `setShader` on your actor. _Using `:SetShader` will not work._
 
 ```lua
 function uranium.init()
-  sprite:SetShader(shader.__raw)
+  setShader(actor, shader)
+  -- or
+  setShaderfuck(shader)
+  -- (don't forget to clearShaderfuck())
 end
 ```
 
@@ -1091,7 +1094,7 @@ local input = require('stdlib.input')
 local DAMPING = 1/9500
 local SPEED = 2
 local JUMP_FORCE = 32
-local GRAVITY = 2.3
+local GRAVITY = 123
 local PLAYER_SIZE = 50
 
 local groundY = sh * 0.8
@@ -1129,7 +1132,7 @@ function uranium.update(dt)
   end
 
   -- apply gravity
-  vel.y = vel.y + GRAVITY
+  vel.y = vel.y + GRAVITY * dt
 
   -- update position, apply damping to velocity
   pos = pos + vel
@@ -1271,7 +1274,7 @@ shader:uniform1f('yo', 1)
 shader:uniform1f('scale', 0.25)
 
 function uranium.init()
-  sprite:SetShader(shader.__raw) -- important!!!! we need __raw, else it'll pass in the proxy and error silently
+  setShader(sprite, shader)
 end
 
 function uranium.update()

template

@@ -1 +1 @@
-Subproject commit 12edf6cb9a6cf4bad6a896566350bbb094d80cce
+Subproject commit 92aa7f33b3875db4bf68ce46a9ff432e7a94fdd1