0.5

• Add audio HTML5 player https://prosopopee.readthedocs.org/en/latest/sections.html#audio by beudbeud
• Update Material theme by beudbeud
• Add iframe section https://prosopopee.readthedocs.org/en/latest/sections.html#iframe by beudbeud
• Add quotes section https://prosopopee.readthedocs.org/en/latest/sections.html#quote by beudbeud
• Add deploy and preview option https://prosopopee.readthedocs.io/en/latest/build.html#preview by beudbeud
• Load only css and jss if the section is used by beudbeud
• Possibility to add floating image in paragraph by beudbeud https://prosopopee.readthedocs.org/en/latest/sections.html#paragraph
• fix some bugs