0.5.0

0.5.0

• Use &'static str type for Node's attribute name, event name and namespace.
• Add helper function styles which allows users to write style properties easily.
• Add helper function styles_flag which allows users to write even more granular style properties.
• Elements attributes are now appended to the existing attributes ones,
  this is needed when there is multiple calls assigning on the same attributes on the same element
• Put back Callback<Event,MSG> as the value of node.events.
• Add map functionality which lets user embed subcomponents view into the parent component by mapping the callbacks
  with a wrapped MSG variant from the parent.

0.4.0

• Added the complete list of svg/html attributes.
• Separate the uncommon html tags into html_extract module. These includes style, which conflicts with the
  commonly used style attributes.
• Separate the uncommon attributes such as span, label which conflicts with the
  commonly used span and label html tags.
• Use snake_case for non-ident tags and attributes.