updated to break steps apart further
cleaned up output
cleaned up formatting code
added more intro stuff after giving this lecture in bio 299 today
fixed typo
added TODO
added some notes
added some more text and code on nw alignment
fixed a bug, cleaned up output
completed nw alignment example
added timing info and some additional text
added notes for db searching chapter
fixed typo
fixed error
updated based on how it made sense to run through nw scoring in class today
added output
added sw alignment code
added some code from last year's class
added some test code
added back missing function