mpld3/mplexporter — pull request #26 by theengineear (2014-07-05 00:36:33+00:00)
Title: multialignment is used when '\n' (newlines) exist in text

If there are *no* newlines, `text._multialignment == None`

If `text._multialignment` has *not* been set, matplotlib will
default this value to equal `text._horizontalalignment`,
for reference.