switching to RTD theme
New implementation of documentation
Cleaned up some import issues and derivative documentation.
Updated basic run example; refactored micro.py -> thermo.py
Refactored lognorm -> distributions and continued reference documentation development
Updated documentation through constants, thermodynamic functions; added approximate kappa kohler hooks to thermo functions
Further incremental documentation updates
Installation documentation
Fleshed out distribution docs
Added port of scientific description from generals paper
Tweaked ParcelModel doc page and promoted ParcelModel.der to a staticmethod
Updated autoclass generatio nto support improved Lognorm and AerosolSpecies docs
polishing documentation changes