Changes

* [https://matthumbard.wordpress.com/2015/04/13/physiology-of-flavors-in-beer-lactobacillus-species/ Physiology of Flavors in Beer – Lactobacillus Species] - Matt Humbard's overview of different species of Lactobacillus physiology, discussion on homoefermentative vs heterofermentative physiology, which species can ferment different types of sugars, and secondary metabolites. * [http://www.fivebladesbrewing.com/lactobacillus-starter-guide/ Lactobacillus Starter Guide by Derek Springer.]