Changes to Fama-French international country portfolio returns

added the non-success response with the status 500

added the optional property meta/stale_since to the response with the 200 status

added the optional property meta/data_age_days to the response with the 200 status

added the optional property meta/notes to the response with the 200 status

added the optional property meta/period to the response with the 200 status

added the optional property data/count to the response with the 200 status

added the optional property data/description to the response with the 200 status

added the optional property data/dividends to the response with the 200 status

added the optional property data/frequency to the response with the 200 status

added the optional property data/measure to the response with the 200 status

added the optional property data/portfolio to the response with the 200 status

added the optional property data/records to the response with the 200 status

added the optional property data/required to the response with the 200 status

added the optional property code to the response with the 401 status

added the optional property code to the response with the 429 status

added the optional property code to the response with the 503 status

added the optional property hint to the response with the 401 status

added the optional property hint to the response with the 429 status

added the optional property hint to the response with the 503 status

added the optional property plan to the response with the 401 status

added the optional property plan to the response with the 429 status

added the optional property plan to the response with the 503 status

added the optional property reason to the response with the 401 status

added the optional property reason to the response with the 429 status

added the optional property reason to the response with the 503 status