v0.3.4

• The update fn now accepts a (new) Orders struct, and returns nothing. Renders occur implicitly,
  with the option to skip rendering, update with an additional message, or perform an asynchronous
  action. (Breaking)
• .mount() now accepts elements. Deprecated .mount_el()
• The log function and macro now support items which implement Debug
• Removed deprecated routing::push_path function (breaking)