Log Message:
Update to 1.54

Upstream changes:
1.54                                                     June 3, 2021

  * Removed a superfluous call to makerandom_itv() thanks to Larry
    Leszczynski <larryl@emailplus.org>.

  * Improved makerandom_itv test to ensure generated numbers are in the
    intterval.

  * Actually include t/chisquare.t