Simplify Message reply methods.

Use Object for send, publish, and reply methods, no need to use generics here.

Signed-off-by: nscavell <nick.scavelli@gmail.com>
Merge pull request #852 from nscavell/master

Simplify Message reply methods
Added some tests for sending invalid objects
VertxOptions and a few more tests
Some more thread safety work
Added blocked thread checking functionality
Added some tests with verticles