changed file header;
added procedure headers;
code cleanup;
remove unused imports;
removal of dead code;
refactor trace and add some simple unit tests;
added a few high level comments;
initial support for limiting subset of kits to be analyzed - permits extra kits to be loaded in db;
description of genotype from vcfcalls
changed file header; added procedure headers; code cleanup; remove unused imports; removal of dead code; refactor trace and add some simple unit tests; added a few high level comments; initial support for limiting subset of kits to be analyzed - permits extra kits to be loaded in db; description of genotype from vcfcalls