Changes to Create an avalara account

added the new optional request property data/attributes/pass_tax_exemption_code

added the optional property data/attributes/pass_tax_exemption_code to the response with the 201 status

added the new required request property data/relationships/tax_categories/data

request property data/type was restricted to a list of enum values

the data/attributes/commit_invoice request property type changed from string to boolean

the data/attributes/ddp request property type changed from string to boolean

removed the request property data/relationships/tax_categories/id

removed the request property data/relationships/tax_categories/type

the type request property default value avalara_accounts was removed

added the new avalara_accounts enum value to the request property data/type

added the media type application/vnd.api+json for the response with the status 201