v1.0.0-alpha.1

• #365 paper-button: Support for fab and mini.
• #362 paper-toolbar: Support for tall.
• #364 Support installation via both npm versions 2 and 3.
• #367 You should now use paper-toolbar-tools component (or respective contextual component) instead of the md-toolbar-tools class.
• #370 paper-icon now once again supports kebab cased icon names, and a size in pixels.
• #372 paper-button can generate a link elements, with an href and optional target attribute.