Add colorbrewer licence to main license file
small change to userGuide
beginning work on developer guide
userGuide: fix small bug
chartOpts vignette: change title; also fix problem in Makefile
chartOpts vignette: use emdash in lists of options
develGuide: Add a bunch of text (and outline)
Vignettes: Links to CSS files
vignettes: fix error in links to css files
vignettes: drop one of the CSS files
vignettes: drop another CSS link
Rmarkdown vignette: revise last paragraph re CSS link
develGuide: remove repeated text
Update version + date