Add M2Eclipse configuration for Jacoco

We currently do not integrate with Jacoco in the Eclipse so we want to
ignore any warnings about Jacoco.
Update to dependency-plugin 2.9

This version is compatible with Java 8
Update CHANGES
[maven-release-plugin] prepare release 29
[maven-release-plugin] prepare for next development iteration
Update to Jackson 2.4.4 and add JDK8 module