Changed a number of exceptions to log properly.

This is not an exhaustive list (more remain), but this should cover most
caught-but-unactionable exceptions to log something better (or clean up
where appropriate).
Improved Nio2 Exception Handling

These exceptions were simply reported for no reason.
Merge pull request #5 from meledin/exceptions

Changed a number of exceptions to log properly.
Merge pull request #4 from meledin/master

Caching of dependencies in AWS to speed up builds
Update .travis.yml