remove unnecessary import
VCFMeta cleanups - make fields immutable, move responsibility for
parsing out of VCFParser into constructor of this class
Massive reorganization, making VCFIterator type that also provides
access to processed VCFHeaders.
Remove command-line functionality from XLifyVcf, now a VCFIterator.

ApplyVCFFilters can write to XLS by using -x option.
New package: org.drpowell.vcffilters with all of the VCFVariant filters
More sensible placement for FixedKeysMapFactory.
Change to not use getValue("ID") until knowing the meta is an INFO type
use javascript's with rather than manually mapping functions
reworking AnnotatingIterator as a VCFIterator
back to a single command (Varitas) unifying functions by VCFIterators
config.js to use dbNSFP2.0