All sparse vector types now have a significant smaller base object size. (#67)
Fixed bug where coerce_to_sparse_data_frame() and coerce_to_sparse_tibble() didn't work with matrices with fully sparse columns. (#69)
All coerce functions have received a call argument. (#72)
Helper function has_sparse_elements() has been added (#70)
is_sparse_vector() has been rewritten for speed improvement. (#76)
Fixed bugs where coerce_to_sparse_matrix() would error for completely sparse columns. (#77)
coerce_to_sparse_matrix() Now turns dense zeroes into sparse zeroes. (#77)