Trim the XML content of leading and trailing whitespace before performing request.
Trim the XML content of leading and trailing whitespace before performing request.

This prevents any issues with PUT requests where the XML body was encoded with safe_encode
and the whitespace caused the request to fail.

slightlydiff/yii2-xero,whytewaters/XeroOAuth-PHP,tkrish/XeroOAuth-PHP,elliotchance/xero-api,XeroAPI/XeroOAuth-PHP