We had a bug where calling ConnectPlan.cancel() before ConnectPlan.connectTcp() would drop the cancel. This is because the rawSocket wasn't created yet to cancel. Also document fast fallback on our documentation site.
* Improve OkHttp documentation * Remove placeholder files * remove site folder * Create upgrading_to_okhttp_4.md * Add redirects and fix paths * add missing tls page to redirects * Use custom SVG icons * Update deploy_website.sh * Push new changes.