bugfix: dead lock when service_harbor exit
bugfix: redirect should pass session (0)
throw error when skynet.exit
add new api skynet.task()
skynet.task return session:traceback
bugfix: create queue first
ready for release
Merge pull request #130 from cloudwu/dev

Dev
bugfix: remote send handle destination
add worker dispatch weight
socket id can't be less then 0
gate support TCP_NODELAY
update history
add skynet.queue
bugfix: socket channel
bugfix: Issue #133
update readme
add crypt lib
add socket.limit for defence
Merge branch 'dev' into sconn