-Changed audio file decoding backend due to more permissive licensing. Replaced libsndfile to dr_wav and dr_flac.

-Added individual audio source playback with playback markers in timeline.
-Added audio playback solver to figure out which audio sources are currently playing.
-Implemented project structure with relative filepaths to enable sharing of soundscape projects.
-Timeline binary data encoded and decoded in little endian in big endian and little endian systems.

• Fixed issue with sound loading.

• Added saving and loading sound producers, sound bank, effect zones from project file.

• Fixed Windows mingw build. No more segfault after closing dialog.

First release of 3D Audio Producer!

• Can interact with sound producers and effect zones with a mouse click.
• Use sound bank to assign sounds to sound producers.
• Move listener with keyboard keys W, A, S, D, Q, E
• Move sound producers with keyboard keys I, J, K, L, U, O.
• Three Effect Zones: Echo, Standard Reverb, EAX Reverb
• Select effect zone or sound producer for editing or removal.