add mesh.from, mesh.calibrate, mesh.each, and unify lastMesh*
add dumb flash wrapper around delay
slight calibration fixes
experimentally allow multiple commands at once
also turn off led when done
simpler mesh flush command
Merge branch 'master' of https://github.com/Pinoccio/library-pinoccio into meshcalibrate
make it a bit faster, blinkier, and more sensitive
Merge pull request #175 from Pinoccio/meshcalibrate

mesh.calibrate(seconds) utility