fix typo in git_lab.md: UserA->UserB
Add a few items to the course outline
Add to lec 6 slides
Example for knitr spin(), with lecture 6
xkcd image for lec 6
Minor changes to example.R accompanying lec 6
Add a bunch to lec 6 slides; nearly there.
Lec 6: Fill out a couple of additional slides
Lec 6: two small changes
A couple more slides, plus ReadMe for the xkcd figure
Add comic for Lec 7
Lec 6: add a slide, plus a couple of other small changes
ReadMe: Mention font used in slides
Full URL for xkcd comic
Add Tex Gyre Heros fonts within repository
Fix slight problem re local fonts: Path -> ExternalLocation
Further small changes re fonts
Starting lec 7: writing clear code
Lec 6: PDF with selected notes pages
Lec 6: Add file with comments that arose during the discussion