v0.1.6

• Use new nlmixr2est covariate selection enforcment for babelmixr2

• Fix a bug where the NONMEM export isn't working well (#839)

• Check loaded rxode2 information and compare to what the loaded
  model information should be. This allows better checking of which
  model is loaded and even more robust stability. It requires
  rxode2 > 3.0.2.