1.2.1

Updated documentation.

1.2.0

Added hist_2d and hist_md functions.

1.1.1

Fixed precision errors in vec_to_var_samp with many input rows.

1.1.0

Added vec_to_sum function.

1.0.1

Fixed array out-of-bounds access.

Added support for Postgres 9.4.

1.0.0

Initial release.