adds cleaner exit code to GLFW apps
Initial progress on documentation of ofUtils.h.
Typo fixed.
Merge branch 'master' of github.com:openframeworks/openFrameworks into feature-documentation

Conflicts:
	libs/openFrameworks/utils/ofUtils.h
Some typo fixes.
feature: added ofxiOSGetDeviceInfo which returns an object which contains type, device string and major and minor versions of the device. Relates to #2872
Merge branch 'master' into feature-documentation

Conflicts:
	libs/openFrameworks/utils/ofUtils.h
fix incorrect signature for ofToDataPath()
Merge pull request #2914 from openframeworks/feature-documentation

Initial progress on documentation of ofUtils.h.
Clean up documentation of ofImage member variables.
Clean up grammar and spacing for ofThread.
Fix doxygen format.
Further cleanup and clarification of ofImage documentation.
fix for ofSetDataPathRoot method signature.
Merge pull request #2971 from julapy/ofSetDataPathRoot_fix

fix for ofSetDataPathRoot method signature.
Merge pull request #2970 from bakercp/documentation-typos

Incremental Documentation Cleanup and Typo Correction
Revert "add ability to query current orientation matrix state"

This reverts commit e8da01f8fc548b17094f860d8d604f939b36c36c.
add ofGetCurrentOrientationMatrix()

* extend api, add change log entry
add default implementation to base renderer
add implementation for glRenderer