Just some constructive feedback.
Calliper requires me to pull in 10 (which I think is the minimum) new jars into my project.
It was only 10 before.
Granted I put these into lib/build so it's clear that these are only required for the build process and not part of the main project.
But it's onerous, especially when not no maven, to require lots of external .jars.
Even with maven, having a large number of dependencies just makes development harder and more difficult to grok the project as now there are a lot of moving parts.
Just my $0.02
Onward!