v0.7.0

Breaking changes

• The <l-map> component now uses the globally available window.L instance of Leaflet by default.
  If you are using SSR in an existing project and relying on the default behaviour, you will now need to pass
  :useGlobalLeaflet="false" to your <l-map>.

Added

• Changelog file.
• Quickstart and SSR sections in readme.

Changed

• Minor additional updates to the readme.
• Code formatting in some playground examples.
• Moved @types/leaflet to devDependencies.