feat(Utils): return a mean time step from .GetFeatModel

Refs #106
4 jobs for 106-runmodel_cemaneige-fails-in-createinputsmodel-at-the-hourly-time-step in 8 minutes and 42 seconds (queued for 35 seconds)
Status Name Job ID Coverage
  Build
passed build_patched #162016

00:00:27

 
  Regression
passed regression_patched #162017

00:01:01

 
  Tests
passed check_as_cran_patched #162019

00:02:43

passed check_not_cran_patched #162018

00:04:29