sendgrid/smtpapi-php — pull request #2 by awwa (2014-11-10 15:20:31+00:00)
Title: Allow to set options for jsonString()

The jsonString() method returns "Unicode Escaped JSON string" by default.
I want to specify the options parameter for the method.
This allows to get Non-Unicode Escaped JSON string.
This can be used to convert the JSON string to other character sets on SMTP protocol.