v0.28.12

Stipple v0.28.12

Diff since v0.28.11

Merged pull requests:

• core_theme now only affects whether standard css is loaded (#162) (@jochenkrattenmacher)
• switch to Vue 3 (#263) (@hhaensel)
• 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:

• Reactive Dict with string keys: curly braces not escaped properly (#135)
• fields that are changed by RENDERING_MAPPINGS are not synchronised (#275)
• Example: Copy to clipboard button (#278)