Developmental merge to bring python-R-bokeh up to recent tracking level with nist_master
Developmental merge to bring python-R-bokeh up to recent tracking level with nist_master

joshgabriel/dft-crossfilter,joshgabriel/dft-crossfilter,joshgabriel/dft-crossfilter,joshgabriel/dft-crossfilter,joshgabriel/dft-crossfilter