[openal] OpenAL Soft 1.18.0 released!

[Chris Robinson]

It took far too long, but the latest release is now available:

http://openal-soft.org/

Highlights of this release include improved reverb processing, increased 
resource limits (more auxiliary effect slots, and more sources and 
source sends when requested at context creation), several new rendering 
options (including UHJ output, dual-band processing, distance 
compensation, and near-field simulation), several new extensions, and 
improved HRTF quality. There is also support for opening devices on 
Windows with its DeviceID or GUID (to help with VR headset integration), 
and experimental support for audio capture on Android.

The new extensions supported in this release are:
<https://icculus.org/alextreg/index.php?operation=op_showext&extname=AL_EXT_STEREO_ANGLES>
<https://icculus.org/alextreg/index.php?operation=op_showext&extname=AL_EXT_SOURCE_RADIUS>
<http://openal-soft.org/openal-extensions/SOFT_gain_clamp_ex.txt>
<http://openal-soft.org/openal-extensions/SOFT_source_resampler.txt>
<http://openal-soft.org/openal-extensions/SOFT_source_spatialize.txt>
<http://openal-soft.org/openal-extensions/SOFT_output_limiter.txt>


Currently, the immediate plan for the future is to add support for 
dual-ear HRTF measurements, and creating mhr files from SOFA files. I 
also intend to work on new extensions to support effect chains and 
better control over output (e.g. more configurable parameters for the 
limiter and dithering). No doubt, plenty more will come along the way.

I know it's been quite long since the last release, so thanks for your 
patience. Feel free to let me know if you have any questions or comments.