Do not set $this->promise on connection creation

Ignore connection push if pool closed

The server going away may cause it to send an error packet

Fixed amphp#40 - unpack not having enough input

Prepared statement closing must properly reset the sequence ID

Update connect() and crypto enable

Fixup un/signed mess, add support for decoding SHORT in binary protocol

Merge pull request amphp#31 from marcioAlmada/master

Fix connection pool recovery

Fix amphp#20 (leave read watcher open watching for close)

Also make tests more flexible (otherwise it tends to break with different mysql versions)

Allow arrays inside prepares for multiple equally named parameters