Compute free energies using OpenMM.
Modules:
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          atm–Automated BFE calculations using the alchemical transfer method 
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          config–Common configuration models. 
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          corrections–Compute analytical corrections to free energies. 
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          ddg–Estimate ddG values from sampled data. 
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          fep–Modify OpenMM systems to depend on FEP lambdas. 
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          inputs–Helpers for loading inputs from a standard directory structure. 
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          reference–Utilities for automatically selecting 'reference' atoms for alignment. 
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          septop–Automated BFE calculations using the seperated topology method 
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          tests–
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          utils–Common utilities. 
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          uwham–Estimate free energies using the UWHAM method [1]