0.19.0

• Updated url-pattern, supports optional patterns.

0.18.4

• IE8 compat fixes

0.18.3

• Made getParentRouter() method optional when implementing new routers.

0.18.2

• update react-async dep

0.18.1

• fix IE9 not to use pathnameEnvironment by default (pushState is absent
  there).

0.18.0

• breaking change Router now only prefetches async state (via react-async)
  if and only if current handler's type is different from next handler's type.

  This now matches the behaviour of getInitialState which is only called once
  for each component instance.

  If you have your async state dependent on props, you need to initiate async
  state update in componentWillReceiveProps(nextProps) by using values from
  nextProps.

0.17.0

• Add <CaptureClicks> component to capture clicks on <a>-elements and turn
  them into in-app navigation actions. Thanks to Matthew Dapena-Tretter
  (@matthewwithanm on GitHub).

0.16.0

• RouterMixin now delegates state update to setRoutingState method if it's
  available.
• AsyncRouteRenderingMixin now provides implementation of setRoutingState
  store pendingState update in router's state.
• AsyncRouteRenderingMixin now provides hasPendingUpdate() which returns t
  if router has active pendingState. This fixes #23.
• Handler component is now instantiated during state update.

0.15.3

• RouterMixin doesn't specify onNavigation/onBeforeNavigation in
  getDefaultProps and thus allows to specify them in user code (#22).

0.15.2

• Fix bug with require('./environment') using an invalid case.