Revert "Disable more Jackson auto-detection"

This reverts commit 8c26f4ed3fb64f3368227f8c10360629245f6543.

We will add this backwards incompatible change in the next release.
Update NEWS and CHANGES
[maven-release-plugin] prepare release 0.69
[maven-release-plugin] prepare for next development iteration
Upgrade to Jackson 2.1.3
Add missing dependency type in launcher README
Use correct artifact in launcher README
Make AsyncHttpClient truly async
Extract AsyncHttClient interface

AsyncHttpClient extends HttpClient and the Guice binder binds to both types