ofConstants.h: update version number

change minor version to 3 in ofConstants.h

Merge branch 'stable'

Conflicts:
	addons/ofxiOS/src/app/ofAppiOSWindow.mm

ofVbo: don't use VAOs unless GL3+, Closes openframeworks#2580

programmable renderer: remove the warnings on drawing mesh...

Update examples/events/simpleEventsExample/src/circle.cpp

Fix case error in simpleEventsExample include.

Merge pull request openframeworks#1673 from eranws/develop

Update examples/communication/serialExample/src/testApp.cpp

makefile: add glew pkg to OF makefile

Merge branch 'develop'

Merge pull request openframeworks#672 from stfj/master

ofxiPhoneSoundStream