VRS Compliance

As mentioned earlier in the documentation, the Gene Normalizer incorporates structures from the GA4GH Variation Representation Specification (VRS) to integrate more smoothly with other related libraries. The Gene Normalizer is currently released in two branches, corresponding to different VRS releases:

Gene Normalizer branch	Gene Normalizer version	VRS version
main	0.3.x	2.X
vrs-1.x (no longer maintained)	0.1.x	1.X