update docs

Author: luizbills

public/about.html

@@ -396,6 +396,9 @@ <h2><a id="globals">Global Variables</a></h2>
 // the default sound played in `sfx()`
 DEFAULT_SFX: number[]
 
+// the list of colors in the current palette
+COLORS: string[]
+
 // Math constants
 PI: number // approximately 3.14 radians (180°)
 
@@ -686,6 +689,11 @@ <h2><a id="engine-api">Engine API</a></h2>
 // Create or update an global variables (and instance properties)
 setvar(name: string, value: any): void
 
+// Update or reset the palette color
+// example: pal(['#000', '#FFF']) is a 1-bit color palette
+// example: pal() resets the default color palette
+pal(index: string[]): void
+
 // Gets the color value given its index.
 // example: getcolor(0) returns "#111"
 getcolor(index: number): string

public/sw.js

@@ -1,5 +1,5 @@
 const cacheName = "luizbills.litecanvas-editor-v1";
-const version = "2.81.1";
+const version = "2.81.2";
 
 const precacheResources = [
   "/",