DataTable vertical alignment of text

How can I modify the vertical text alignment in a DataTable cell? I would like to have it center, by default it seems to be top.

AFAIK as of Bokeh 1.2 there is not any configurable option for that. Your best bet is to try the HTMLTemplateFormatter, which should allow you to use a general HTML template for formatting cells.

Otherwise, this seems like a reasonable ask to open a GitHub issue to discuss.