2.2.0 Minor Release

This release updates the library level support for boolean attributes ensuring they are provided in their correct form (formerly this required string to boolean conversion).

This also includes an update to the TaxRates object, ensuring that the IsCompound field is returned correctly as Boolean.

It also provides a new parameter that can be provided when creating attachments for accounts receivable invoices: IncludeOnline. This parameter will show the attachment when the online invoice has been sent.