Connection: move post_handshake() into BUILD() and remove read_cb attribute. Now the Connection represents a WebSocket connection whose handshake is already completed. Users of Connection class must finish their handshake with the AnyEvent::Handle given to the Connection.
update release tests
change changes messages
v0.15_01

  - public API for creating Connection instance
v0.16

  - skip ssl test if you have a bad combination of Mojolicious and Net::SSLeay

Conflicts:
	Changes
	dist.ini
looks like this was definitely a bug in mojo for this specific version
Connection: bug fix: client connection could not receive the message sent by the server right after handshake response. This was because the on_read() callback was executed before registering no each_message/next_message callbacks.
initial message can be sent using handshake callback