Screenshot support#25

Merged

tomstitt merged 3 commits intomasterfrom

Sep 3, 2021

Commits on Aug 25, 2021

add screenshot method (note: this requires a yet-to-be released version of glvis from npm)
tomstitt
committed

Commits on Aug 31, 2021

add (sync) screenshot method that saves from Python
tomstitt
committed

Commits on Sep 3, 2021

bump glvis req to 0.2.1 and bump glvis-jupyter version to 0.3.0
tomstitt
committed