Compression is a WHATWG standard now

See whatwg/sg#236 for context.

index.bs

@@ -1,19 +1,11 @@
 <pre class="metadata">
-Title: Compression Streams
+Group: WHATWG
+H1: Compression
 Shortname: compression
-Level: none
-Status: CG-DRAFT
-Group: wicg
-ED: https://wicg.github.io/compression/
-Editor: Canon Mukai, Google
-Editor: Adam Rice, Google
-Abstract:
-  This document defines a set of JavaScript APIs to compress and decompress
-  streams of binary data.
-Repository: wicg/compression
+Text Macro: TWITTER compressionstandard
+Abstract: This document defines a set of JavaScript APIs to compress and decompress streams of binary data.
 Indent: 2
 Markup Shorthands: markdown yes
-Boilerplate: omit conformance
 </pre>
 <pre class="link-defaults">
 spec:streams; type:interface; text:ReadableStream
@@ -230,5 +222,9 @@ function decompressBlob(blob) {
 }
 </pre>
 
-# Acknowledgments #  {#acknowledgments}
-The editors wish to thank Domenic Denicola and Yutaka Hirano, for their support.
+<h2 class="no-num" id="acknowledgments">Acknowledgments</h2>
+Thanks to Canon Mukai, Domenic Denicola, and Yutaka Hirano, for their support.
+
+This standard is written by Adam Rice (<a href="https://google.com">Google</a>, <a href="mailto:[email protected]">[email protected]</a>).
+
+<p boilerplate=ipr>This Living Standard was originally developed in the W3C WICG, where it was available under the [W3C Software and Document License](https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document).