Update dependencies: Netty 4.0.24 -> 4.0.32 junit 4.11 -> 4.12 maven-compiler 3.1 -> 3.3 require minimum maven version of 3.3
Update dependencies:
Netty 4.0.24 -> 4.0.32
junit 4.11 -> 4.12
maven-compiler 3.1 -> 3.3
require minimum maven version of 3.3

alaisi/postgres-async-driver,jaceksokol/postgres-async-driver