Add LogStream class to public header
Update copyright notice
Provide constructor for RemoteIO driver that doesn't initialize the audio session
Include missing header
Ensure Methcla::SoundFile is initialized in public methods
Add move constructor and assignment operator to Methcla::SoundFile

Also don't throw from the destructor.
Add operator bool to Methcla::SoundFile for checking whether it is valid
Add close method to Methcla::SoundFile
Rename m_world to m_context
Make activate and cleanup methods optional for Synth implementation
Remove optional and unused activate plugin methods
Move libsndfile before libmpg123 in search path

Currently, libmpg123 chokes on wav files instead of returning an
an error code.
Include shell config files from XCode build script phase
Rename StaticSynthClass to StaticSynthDef
Move Methcla::Audio::EngineImpl to separate module
Remove methcla_world_synth_retain and methcla_world_synth_release
Port tests to googletest framework
Don't use reference counting for Nodes
Import gtest 1.7.0
Add API command for querying realtime memory manager statistics

Closes #70