Update Visual Studio guide for v2012
ofConstants: change version to 0.8.0
key events: revert to KEY_LEFT/RIGHT + add generic to list of pressed keys
ofVbo: unbind buffers and disable client states with vaos + non programmable
ofVboMesh: don't autoenable attributes on update
Merge pull request #2286 from danomatika/develop

log message addon updates, header readability & update fixes
ofXml: remove unnecesary warning
parameterGroupExample: fixes to use ofXml and group all parameters in a parameter group
tiny fix for carbon warnings.
Merge branch 'develop' of github.com:openframeworks/openFrameworks into develop
Merge branch 'develop' of github.com:openframeworks/openFrameworks into develop
fix logging merge for linux
ofImage::grabScreen: glReadPixels needs glFormat not glInternalFormat. Closes #2317
ofStyle: remove depthtest was breaking old projects. Closes #2316
ofStyle: remove depthtest init in constructor
xmlExample fix closes #2319
ofStyle: don't set depthTest in style
small fix not to use GLUT window for xmlExample and making xmlSettingsExample match xmlExample
changed osx sans font to Helvetica Neue, which seems to be more consistent across OSes
Merge branch 'develop' of github.com:openframeworks/openFrameworks into xmlExample-fixes