Adding reaction families

As well as the RMG-database, (unfortunately) there are several places in the RMG-Py source code where reaction family details are hard-coded. You should check all these when you create a new reaction family. Here are some of the places:

• rmgpy.data.kinetics.family
  • applyRecipe: swapping the atom labels (eg. *1 and *2) around
  • getReactionPairs: figuring out which species becomes which for flux analyses
  • __generateReactions: correcting degeneracy eg. dividing by 2 for radical recombination
• rmgpy.data.kinetics.rules
  • processOldLibraryEntry: determining units when importing RMG-Java database
  • getAllRules: for radical recombination add reverse templates
• rmgpy.data.kinetics.groups
  • getReactionTemplate: for radical recombination duplicate the template
• RMG-database/input/kinetics/families/recommended.py