Automatically determine Minimizer max parameter change

**Is your feature request related to a problem? Please describe.**
Currently ```Minimizer.max_param_change()``` is hard coded to return ```0.01```.

**Describe the solution you'd like**
The ```max_param_change()``` should be calculated by running a simulation, determining the uncertainty in the energy, changing a parameter and then calculating the new energy and determining if it falls within the uncertainty. It may also require minimization, or a short trajectory run - **This will require a significant amount of testing to determine if our assumptions are valid.**