-Inspired by https://canvas.harvard.edu/courses/5749 (STAT E-100, Fall 2015)
+https://r-graphics.org
+
+Inspired by https://canvas.harvard.edu/courses/5749/assignments/syllabus (STAT E-100, Fall 2015)
> options(warn=-1) # warnings from `library` are annoying
> options(device="png") # instead of Rplots.pdf