arrays have #'array-dimentions and #'array-rank (as a matrix)
and there's cool (row-major-aref my-arr index) for indexing array with
single index, going throug all elements
vectors have literal notation #(1 2 4 1),
they are one dimentional
have :element-type key in constructor, not quite sure how to use that
and we can try to #'coerce list to something else by providing symbol
for type, which we could get from (type-of my-vector)
also literal notation for byte vectors, cool #*110011001
efim