v2.0.0-rc8

Changelog

• 277e4bf change: no dialer warning logger anymore - parent dialer caller can log the error - remove warner settings field for dot and plain dialers
• b2cf2c0 chore(pkg): dialer string returns connection type only, i.e. https instead of dns over https
• 87b1fef chore(pkg/dot): use tls.Dialer instead of tls.Client
• fdd4373 chore(pkg/server): shutdown without waiting for connections to close - UDP server tend not to terminate connections on time
• 5326983 feat(exchanger): add request question context when encountering an error