removing swizzle macro, implementing Vec3 for CLJ/CLJS, adding default value handling to swizzle fns, bug fix lookup fns, adding key-error call to assoc & nth renaming meta field
removing swizzle macro, implementing Vec3 for CLJ/CLJS, adding default value handling to swizzle fns, bug fix lookup fns, adding key-error call to assoc & nth renaming meta field

JDReutt/geom,thi-ng/geom,thi-ng/geom