Allow for subtracting ligand-buffer heats

[bas-rustenburg]

We need to add a feature to subtract buffer heats from the experiment to correctly run the MCMC script.

[jchodera]

Can you clarify?

[jchodera]

The Bayesian ITC scheme uses an explicit model for the buffer mechanical heats rather than fitting the difference heats.

[bas-rustenburg]

Yes, that is one constant heat. However, it might be useful to add the possibility to subtract the heat from a ligand-buffer titration, where a dilution effect may occur.