Updating dependencies.
This release contains
- a patch to a nil reference exception in bmclib (which was updated to the latest tag 0.4.11).
- a bug fix, where IPMI was not tried when it should.
- a bug fix, where "chassis power cycle" was always tried, whereas the power status should be tried first.
- the updated IPMI implementation (copied from bmclib, but we should actually use bmclib in a proper way... not copy it).