hillclimb: avoid calculating log(0)
npopCI: avoid calculating log(0)
omegaCI: avoid calculating log(0)
sigmaCI: avoid calculating log(0)
demarcationCI: simplify the calculation of npop
demarcationCI: avoid calculating log(0)
methods: avoid dividing by zero
bruteforce: update copyright year
demarcationCI: update copyright year
hillclimb: update copyright year
npopCI: update copyright year
omegaCI: update copyright year
sigmaCI: update copyright year
methods: update copyright year
methods: use ISO_FORTRAN_ENV to avoid non-crossplatform kind usage