Use the customerID from the customerToken instead.

The customerID is available from the `BUYClient.customerToken` property, which must be set before using these methods.

Remove Swift Sample App

Product tags support

Use NSNumber for product id in Client APIs

Remove password confirmation

Fix Swift Sample App

Fix type for defaultAddress on Customer

Replace generated accessors with method redirection

Fix customer app

Remove public product url

Update CocoaPods support for version 2.0

Add header_dir to podspec

Remove extern references to constants that no longer exist. Remove reference to header that no longer exists. Re-order headers for clarity. Add comments to identify why headers are grouped together.

Execute completion blocks before marking as finished

Improve consistency check when starting checkout