Fixes #56: mvn versions:update-properties versions:use-latest-releases (jdepend-maven-plugin, maven-checkstyle-plugin, guava, buildnumber-maven-plugin, maven-changes-plugin, slf4j, logback)

Updated ${jdepend-maven-plugin.version} from 2.0-beta-2 to 2.0
Updated ${maven-checkstyle-plugin.version} from 2.12 to 2.12.1
Updated ${guava.version} from 16.0.1 to 17.0
Updated ${buildnumber-maven-plugin.version} from 1.2 to 1.3
Updated ${maven-changes-plugin.version} from 2.9 to 2.10
Updated ${org.slf4j.version} from 1.7.6 to 1.7.7
Updated ch.qos.logback:logback-classic:jar:1.1.1 to version 1.1.2
Updated ch.qos.logback:logback-core:jar:1.1.1 to version 1.1.2