Consider add a block version of Client.new?

[jrochkind]

It would self-close by calling #close in an ensure block (ensure is important!) after the block param is finished.

NetHttp2::Client.new("http://106.186.112.116") do
     client.get something
     client.post something
end

Or doc that if it already exists. :)

[ostinelli]

This issue was opened before NetHttp2 had async calls too.

If a block generates a client, you would expect to be able to use all the features of a client, and I don't really see how you wold use this block to perform async calls too (since something needs to block to wait for async replies).

What is your opinion on this?