Added the VarianceGrabber.  Updates to validateRates and eVSAutomator as well.
Changed EVS STATS sample barcode field from 0 to 1.
Multiple updates to SBP Generator logic.
Minor changes to EVS and SBP Generators for LW STATS Sampling
Added extract generation functionality.
Tiny changes to extract generation methods.
Updates to rate check and validation logic.
Minor updates to rate calculation logic.
Logic changes for Priority Mail Cubic rate calculation.
More updates to PM rate calculation.
Significant updates to rate calculation, particularly Standard Mail.
Minor updates.
Merge branch 'master' of https://github.com/h0tl33t/manifestgenerator