reminify p5.js

[mwcz]

I was seeing something strange where using p5.js worked fine, and p5.min.js also worked but threw an error, "p5 is not defined". I traced it to the p5.prototype._validateParameters function being declared twice, the second time to disable it. But in the minified file, it was declared only once, but it seemed to be outside of the scope of where "p5" is defined.

I searched https://raw.githubusercontent.com/lmccart/p5.js-release/master/lib/p5.min.js for "p5.prototype._validateParameters" and thought it was weird how the function is a noop, whereas in p5.js it is defined once, then overridden, but even the overridden version returns true.

I ran uglifyjs p5.js -c -m -o p5.min.js for this PR and it resolved the error for me. Lemme know if I did anything wrong or telling me to buzz off is fine too. :D

[mwcz]

Then again maybe submitting PRs on a release repo doesn't make sense! :)