ofxOfelia v2.2.0

• added "ofelia function" object for quickly writing a simple lua script
• added default module alias "M" to ease writing variables (e.g. ofelia.num -> M.num)
• fixed crashing issue when "ofelia define" tries to return its module table
• fixed crashing issue when error occurs inside ofelia.perform() function routine
• fixed stack overflow error in ofelia.perform() function
• changed naming convention for classes and functions (e.g. of.Image -> ofImage)
• renamed abstractions according to the new naming style
• redesigned and added some "of" class abstractions (e.g. ofFbo, ofFont, ofImage..)
• added pdOsc() and pdBlOsc() class which contain various types of oscillators
• added pdFilter() class which contains various types of audio filter functions
• added some useful "pd" abstractions and help files inside "ofelia/libs/pd" folder
• simplified some example patches by using the updated features