Fix all relative paths in built output

build.js

@@ -154,11 +154,11 @@ async function addSass(sourcePath, targetPath) {
 		indentType: "tab",
 		indentWidth: 1,
 		functions: {
-			"static($name)": function(name) {
+			"relative($name)": function(name) {
 				if (!(name instanceof sass.types.String)) {
 					throw "$name: expected a string"
 				}
-				const result = static.get(name.getValue())
+				const result = getRelative(targetPath, static.get(name.getValue()))
 				if (typeof result === "string") {
 					return new sass.types.String(result)
 				} else {

src/sass/base.sass

@@ -2,7 +2,7 @@
   @font-face
     font-family: Whitney
     font-weight: $weight
-    src: url(static("/assets/fonts/whitney-" + $weight + ".woff")) format("woff2")
+    src: url(relative("/assets/fonts/whitney-" + $weight + ".woff")) format("woff2")
 
 +import-whitney(400)
 +import-whitney(500)