Removed duplicate security trimming setting from web.config file of MvcMusicStore demo.
Added a key property to aid in building custom CSS schemes in HTML helpers.
Fixes #214, Area in top node influences child nodes.
Fix for issue described in #212, preserved route parameters being written to shared cache. Also fixes recursion issue where route values are being copied from the current request multiple times.
Updated external DI configurations to register ICacheProvider<T> as an open generic instead of a registration specific to ISiteMap. This will provide more robust upgrades.
Added link to contribution guide to readme.