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

Context can be cancelled by parent. Doesn't indicate the CloseRead goroutine
has exited.

Far simpler now. Sorry this took a while.

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

Closes #330

Closes #330

Closes #355

Updates e9d08816

Closes #384

Go 1.16 has introduced net.ErrClosed, which should be returned/wrapped when an
I/O call is performed on a network connection which has already been closed.
This is useful to avoid cluttering logs with messages like "failed to close
WebSocket: already wrote close".

Closes: https://github.com/nhooyr/websocket/issues/286

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

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

This way we don't pollute the directory tree.

See https://github.com/nhooyr/websocket/issues/182

Closes #182

Closes #179

Too many improvements and changes to list.

Will include a detailed changelog for release.