Changes in version 0.1.0 (2026-10-28) First release. - maxconstant_c(), a C implementation of CAs::maxconstant(). Arrays with NA cells are accepted and treated as in the current CAs::maxconstant() (version 0.24-4): an NA cell matches no symbol when rows are compared, and the NA cells of the rows made constant are filled. - powerCT_any(), power_plan() and power_build(), the power construction of Colbourn and Torres-Jimenez for any strength, number of columns and number of levels, homogeneous case. - count_core(), tuple counts for every set of t columns. - flexpos_c(), markflex_c() and postopNCK_c(), C versions of CAs::flexpos(), CAs::markflex() and of the marking steps of CAs::postopNCK().