httpPost now can automatically serialize and send XML data
httpPost now can automatically serialize and send XML data

Fix bug where XML loaded with loadXML is not an instance of p5.XML

limzykenneth/p5.js,dhowe/p5.js,processing/p5.js,bomoko/p5.js,dhowe/p5.js,processing/p5.js,limzykenneth/p5.js,joecridge/p5.js,mlarghydracept/p5.js,mlarghydracept/p5.js,bomoko/p5.js,joecridge/p5.js