v0.12.1

• 3d8a883 [fixed] Ignore extraneous popstate events in WebKit
• db2607d [fixed] Double-encoding of URLs
• c5a24a5 [added] Route/Match classes
• ae6fcda [changed] Rename Scrolling => ScrollHistory
• f975bdf [fixed] allow a StaticLocation to be passed directly when creating a router
• 7d52d55 [changed] TestLocation is a constructor
• 193222e [added] StaticLocation, for server-side rendering
• e05e229 [added] Transition#cancel
• 04ba639 [added] Link activeStyle property
• 585d8ec [fixed] Use more correct children invariant
• 62c49d2 [changed] Change Navigation to return the result of goBack()
• 83c8f59 [fixed] Allow special characters in query