First take on vcf-style variants
Add variant search methods
Add missing import and bracket
Move calls above variants to fix build
message -> record

proto conversion fail
1->0 based
Make referenceBases non-optional
camels > underscores
camels > underscores
Typo fix
callset -> callsample, add variantset

Also replaced contig with referenceSequenceName
Update object names
Missed a change from callset -> callSample
Make some variant fields required
Move CallSample up the file, clarify comment
Add variant ids and call sample ids to variantsets
Remove variantIds from VariantSet
Add callSampleNames and todos for wip fields
Make callSample.variantSetId an array, fix todos
endPosition is exclusive