v0.29.0

Stipple v0.29.0

Diff since v0.28.11

Merged pull requests:

• support gutter by @gutter and flexgrid kwarg gutter (#273) (@hhaensel)
• stipple_parse structs (#279) (@hhaensel)
• remove julia_to_vue, make OptDict an OrderedDict (#280) (@hhaensel)

Closed issues:

• fields that are changed by RENDERING_MAPPINGS are not synchronised (#275)