Update Scrollbar on document change.
Update Scrollbar on document change.

michael/substance-1,jacwright/substance,andene/substance,podviaznikov/substance,TypesetIO/substance,michael/substance-1,podviaznikov/substance,jacwright/substance,abhaga/substance,substance/substance,TypesetIO/substance,stencila/substance,andene/substance,substance/substance,abhaga/substance