Have a good method for scaling scores or acceptance

[malramsay64]

There is currently only a single acceptance algorithm for all the different types of
scores. This is an issue in that for the acceptance criteria to work properly there
needs to be a good choice of score or a good choice of the 'temperature' for the
acceptance. This means either a good method of controlling it, values which work for a
large range or something similar.

[malramsay64]

This has been added and the step size scales with the acceptance