4.20.61

This was a small update until Twitch ripped out half their CSS.

* Added: Cross-Origin Storage Bridge for settings, better synchronizing settings on sub-domains with support for binary blobs at the cost of slightly increased start-up time.
* Fixed: Rendering issues caused by missing CSS.
* Fixed: FFZ Control Center button not appearing on dashboard pages, and appearing in the incorrect place.
* Changed: Work towards splitting modules into their own JS files for a faster, more asynchronous startup.
* API Added: Methods for serializing and deserializing Blobs for transmission across postMessage.

src/utilities/blobs.js

@@ -0,0 +1,59 @@
+'use strict';
+
+export function isValidBlob(blob) {
+	return blob instanceof Blob || blob instanceof File || blob instanceof ArrayBuffer || blob instanceof Uint8Array;
+}
+
+export async function serializeBlob(blob) {
+	if ( ! blob )
+		return null;
+
+	if ( blob instanceof Blob )
+		return {
+			type: 'blob',
+			mime: blob.type,
+			buffer: await blob.arrayBuffer(),
+		}
+
+	if ( blob instanceof File )
+		return {
+			type: 'file',
+			mime: blob.type,
+			name: blob.name,
+			modified: blob.lastModified,
+			buffer: await blob.arrayBuffer()
+		}
+
+	if ( blob instanceof ArrayBuffer )
+		return {
+			type: 'ab',
+			buffer: blob
+		}
+
+	if ( blob instanceof Uint8Array )
+		return {
+			type: 'u8',
+			buffer: blob.buffer
+		}
+
+	throw new TypeError('Invalid type');
+}
+
+export function deserializeBlob(data) {
+	if ( ! data || ! data.type )
+		return null;
+
+	if ( data.type === 'blob' )
+		return new Blob([data.buffer], {type: data.mime});
+
+	if ( data.type === 'file' )
+		return new File([data.buffer], data.name, {type: data.mime, lastModified: data.modified});
+
+	if ( data.type === 'ab' )
+		return data.buffer;
+
+	if ( data.type === 'u8' )
+		return new Uint8Array(data.buffer);
+
+	throw new TypeError('Invalid type');
+}