2019-06-28 UTC
# 
@AaronGustafson ↩️ All features are, of course, gated by feature availability, so it’s considerably more nuanced:
* Read aloud requires SpeechSynthesis
* Save offline requires Cache API
* Webmention updates requires `template` & `array.filter()`
* Webmention streaming requires WebSockets
* etc. (twitter.com/_/status/1144744905715007488)