updated native libraries to v3
updated project descriptors to report new version number
updated project descriptor to work with new AIR runtime and the new libraries
removed manual dispatching methods since it's been deprecated in the native libraries
removed duplicated function definition
added methods for the new dryRun feature
changed android implementation for the optOut getter to be synchronous
updated android implementation to close and dispose trackers
removed debug flag methods
exposed, previously internal, enumeration to define log levels
implemented new logLevel property and uniformed level enum values
removed session timeout and automatic session management; updated startSession method to the new sessionControl native approach
updated changelog
updated readme and contributing files