Added several resources, changed the dates on filenames for Heard and Hartman (1966, not 1965) and Mcart (1965, not 1955)
Add more literature, Started v6 of manuscript
More work on intro in v6
Finished v6 draft, adde one lit resource, change W-L from loge to log10, deleted old versions of manuscript
Cleaning up some files that were deleted but did not stage properly in RStudio.
Merge pull request #3 from droglenc/master

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