ably 2.27.0 on Node.js NPM

Full Changelog: 2.26.0...2.27.0

What's Changed

Fall back to the base transport when a proxy rejects the WebSocket handshake outright, rather than reporting disconnected after exhausting every host #2285
Move connection resumability decisions from the client to the server: Connection#id, Connection#key and a channel's channelSerial are retained through SUSPENDED, and reconnection always attempts a resume. Connection#createRecoveryKey() consequently returns a recovery key in SUSPENDED, where it previously returned null #2273
Fix a resumed attach advancing the channel's attach serial, which broke the contiguity of untilAttach history with the realtime message stream #2276
Fix stale presence members surviving when a new presence sync replaces one still in progress #2261
Expand the docstrings on Auth, RealtimeChannel, RealtimePresence, RealtimeAnnotations and RestAnnotations to cover prerequisites, side effects and failure modes, and link the REST Channel and Presence members to their reference pages #2242 #2243 #2244 #2245 #2282