0.4.0
This is a minor release with a couple of new features added:
libsemigroupsconstantsPOSITIVE_INFINITY,NEGATIVE_INFINITY, andUNDEFINEDare properly supported;libsemigroups::matrix_helper::powis added as a method for__pow__for some types of matrices (those not defined over a runtime semiring);
and some minor improvements (the tests now usepytestexclusively).