R/qtlcharts version 0.7-8

[Karl Broman]

A new version of R/qtlcharts (for interactive graphics) is available on CRAN; see also http://kbroman.org/qtlcharts

Major changes (see https://github.com/kbroman/qtlcharts/blob/master/NEWS.md): karl

• Rewrote underlying javascript to use new version of d3panels.
• Added a new chart, scat2scat. The idea is to summarize each of a long series of scatterplots with a pair of numbers. Then a scatterplot of those summary statistics is linked to the underlying details: click on a point in the main scatterplot and have the underlying scatterplot be shown.
• Added a new chart, itriplot, for plotting trinomial probabilities, represented as points in an equilateral triangle
• For various charts, added some additional options and changed the name of some options
• Removed the vignettes from the package; they're available on the R/qtlcharts website, http://kbroman.org/qtlcharts

karl