Rebecca-Rumney

Addresses #1300 . Simplest solution to the problem. Just adds a function evaluate_pointwise_loglikelihoods which can be called in the ask-tell loop or calculated separately from the inference.

Hi Michael, I've come across a bug while converting units. The below code produces the error "Incompatible units in . Variable unit [s (1000)] differs from calculated unit [1 (1000)]"...