Lab::Measurement 3.550 released - port to Dist::Zilla

With the release of Lab::Measurement 3.550 we've switched to Dist::Zilla as maintenance tool. If you're not involved in hacking Lab::Measurement, you should essentially not notice this change. However, for the authors of the package, Dist::Zilla makes it much easier to keep track of dependencies, prepare new releases, and eventually also improve and unify the documentation... At the side we've also fixed Issue 4 and Lab::Measurement should now work out of the box with recent Gnuplot on Windows again.