* edit acknowledgements
* finish edits to section 2.1
* finished editing amylase section
* fix italics
* began editing the protease section
* finished editing protease section
* edited the improving enzymatic activity chapter
* started editing yeast section
* continue to edit yeast section
* finished eidts to the yeast section
* final edits to the how sourdough works chapter
* Update preface.tex
Some grammar fixes, capitalization of proper nouns (days of the week like Saturday), and some modest language changes to make the text flow a little better.
* Update preface.tex
Fix double quotes
* Update preface.tex
Fix double quotes (again)
* Update preface.tex
One last double quotes fix
* completed grammar and style edits for the preface
* small fixes
* final polish