update parent pom to latest 31
Update Powermock to 1.5 - better compatibility with JUnit 4.9+, Mockito 1.9.5 and Java 7

2012-12-04: PowerMock 1.5 has finally been released with better support for Java 7 and support for Mockito 1.9.5. Big thanks to the community for helping out with bug fixes and bug tracking. See change log for more details.

http://powermock.googlecode.com/svn/trunk/changelog.txt
add contiperf dependency

Contiperf is useful for benchmarking and tests requiring multi-threaded test execution - it runs as a JUnit rule.

More info: http://databene.org/contiperf.html
add cucumber-jvm support dependencies

These two dependencies support the use of executable specifications directly with code, running via JUnit. The guice dep is added since we expect most any project using litmus to be using guice - although in truth I am not sure if the guice dep will be helpful yet.
increment minor version since several new dependencies were added