1.1.1

improvements

(Re-)enabling default retries in DNS name queries; this had been disabled as a result of revamping timeouts, and resulted in queries only being sent once, which is very little for UDP-related traffic, and breaks if using DNs rate-limiting software. Retries the query just once, for now.

reset timers when adding new intervals, as these may be added as a result on after-select connection handling, and must wait for the next tick cycle (before the patch, they were triggering too soon).
fixed "on close" callback leak on connection reuse, which caused linear performance regression in benchmarks performing one request per connection.
fixed hanging connection when an HTTP/1.1 emitted a "connection: close" header but the server would not emit one (it closes the connection now).
fixed recursive dns cached lookups which may have already expired, and created nil entries in the returned address list.
dns system resolver is now able to retry on failure.