Is there a way to always flatten beams?

[mtoneil]

Vexflow sometimes renders beams at an angle like this:

Is there a way to force the beams to flatten, so the beams in beats 3 and 4 in the above example would look more like beats 1 and 2?
(Note: I am not using auto-beaming.)

[sschmidTU]

beam.render_options.flat_beams = true

Also have a look at flat_beam_offset and min_flat_beam_offset (in render_options)