v1.0.0-preview3

A fairly incremental set of changes, as we settle in on the way we'd like this SDK to solidify our surface area.

• DebounceInstallationAdapter now will let at least one Installation through each day.
• The Installation associated with this device is now automatically renewed every time an Installation is set the NotificationHub backend. Its expirationTime will be set to 30 days from the current date.
• addTemplate is now setTemplate and has "upsert" characteristics.
• Examples have been published to demonstrate how to populate tags to replicate App Center Push Device Properties.