Matthew Humphreys

Add validity checker

11

Return logical arrays indicating whether calculated results fall in valid input ranges (e.g. of temperature, salinity and pressure) given the sets of constants used. One way to do this: -...

See paper ["Generalised expressions for the response of pH to changes in ocean chemistry"](https://doi.org/10.1016/j.gca.2016.04.012) (Hagens & Middelburg, 2016).