This change adds two optional callbacks to both `DialOptions` and
`AcceptOptions`. These callbacks are invoked synchronously when a ping
or pong frame is received, allowing advanced users to log or inspect
payloads for metrics or debugging. If the callback needs to perform more
complex work or reuse the payload outside the callback, it is
recommended to perform processing in a separate goroutine.

The boolean return value of `OnPingReceived` is used to determine if the
subsequent pong frame should be sent. If `false` is returned, the pong
frame is not sent.

Fixes #246

Co-authored-by: Mathias Fredriksson <mafredri@gmail.com>

This will create easily solved breakage on updates but
I figure it's best to pull the band aid off as early as possible

Far simpler now. Sorry this took a while.

Closes #427
Closes #429
Closes #434
Closes #436
Closes #437

Closes #330

Glad no one ran into this in production.

Closes #355

Updates #298

Closes #395

Confirmed library works correctly with a working forward proxy.

For #395

Somehow currently reproduces #391...

Debugging still.

Closes #384

Closes #341

Closes #297

The library we're currently using for protobufs is deprecated. Doesn't belong in the library core
anyway.

Closes #311
Updates #297

Also ran gofmt on everything. Thanks again @paralin. #334

Co-authored-by: Christian Stewart <christian@paral.in>

Closes #220 and #230

Closes #166

See https://github.com/agnivade/wasmbrowsertest/issues/15

It's more clear than * as an origin pattern.

Closes #223

Updates #209

Closes #199

Much simpler config. Github Actions just isn't there yet.

https://github.com/nhooyr/websocket/runs/449477040 seems to have timed
out.