0.2.0

Huge update!

• Updated Loowy to latest WAMP Spec
• Added onReconnectSuccess call on welcome message
• Fixed errors in websocket OnError handler and in logger
• Switched to rapidjson
• Implemented RPC invocation via pcall
• Refactored var dump
• Updated docs for current features

WARNING!
Loowy depends on lua-websockets. But lua-websockets up to and including v2.2 doesn't contain necessary changes. Please manually install lua-websockets from master branch and send message to
lua-websockets maintainer to publish new release :)