v0.9.0

So many changes:

• completely new structure to describe routes in more readable way
• path-to-regexp package replaced by own better suited encode/decode implementation
• better types like State, Routes, Config etc
• go replaced by batch for better readability and more complex scenarios
• enhanced goTo uses keys from new route field keygen
• improved navigators
• updated example to latest React Native
• source code is better organized using class methods