getNameSpacedStore should use storage type set by setStore function by default

[Kuraturpa]

Currently if you set store in config block like this:
storageProvider.setStore('sessionStorage')
Then if you create a namespaced storage it will use localStorage. I think instead it should use the storage type set in config block.

[Kuraturpa]

Looks like you can pass the storage type as second parameter to a namespaced store:
storageProvider.getNameSpacedStore('auth0', 'sessionStorage')
Closing this issue.