- Removes thirdparty dependency History.js
- Adds thirdparty dependency Page.js to manage client-side routing
- Adds a wrapper around Page.js for SilverStripe specific behaviour
- Increased minimum browser requirement to IE10. Native HTML History API routing requires IE10 or newer (necessitated by removal of History.js)
- PJAX pannel loading via now uses promises rather than callbacks
- Adds getClientConfig method to LeftAndMain which can be used to pass config from to the front-end client
