* TODO:JK: improve thread-safety to LADSPA and DSSI
* TODO:JK: removed ags_id_generator.[ch]
* TODO:JK: improved ags-feed recall thread-safety
* TODO:JK: improved ags_audio_signal_feed() reduce over-head
* TODO:JK: improved AgsApplySynth thread-safety
* TODO:JK: implemented AgsFunction
* TODO:JK: implemented AgsServer, AgsRegistry and AgsServerStatus
* TODO:JK: implemented AgsXmlAuthentication, AgsXmlCertificate and AgsXmlPasswordStore
* TODO:JK: implemented AgsFrontController, AgsFactoryController, AgsLocalRegistryController, AgsLocalSerializationController and AgsLocalTaskController
* TODO:JK: refactored AgsAutomationEditor to be more light-weight
* TODO:JK: implemented AgsCartesian properties
* TODO:JK: implemented AgsConnectable:disconnect() to all implementing objects
* TODO:JK: implemented AgsPlaybackDomain properties
* TODO:JK: implemented AgsPlayback properties
* TODO:JK: implemented AgsScaleArea properties
* TODO:JK: implemented AgsApplicationContext properties
* TODO:JK: implement AgsConnectable properly
* TODO:JK: implemented damping/vibration of AgsAudioSignal
* TODO:JK: implemented exponential curve option for ags-envelope recall
