Merge branch 'dev' of https://github.com/mackron/miniaudio into dev

CONTRIBUTING.md

@@ -75,7 +75,7 @@ incur the cost of maintaining build systems in miniaudio.
 
 ### "Would you consider feature XYZ? It requires C11, but don't worry, all compilers support it."
 One of the philosophies of miniaudio is that it should just work, and that includes compilation environment. There's
-no real reason to not support support older compilers. Newer versions of C will not add anything of any significance
+no real reason to not support older compilers. Newer versions of C will not add anything of any significance
 that cannot already be done in C89.
 
 ### "Will you consider adding a third license option such as [my favourite license]?"

research/miniaudio_engine.h

@@ -1636,6 +1636,7 @@ MA_API ma_result ma_sound_set_volume(ma_sound* pSound, float volume);
 MA_API ma_result ma_sound_set_gain_db(ma_sound* pSound, float gainDB);
 MA_API ma_result ma_sound_set_effect(ma_sound* pSound, ma_effect* pEffect);
 MA_API ma_result ma_sound_set_pan(ma_sound* pSound, float pan);
+MA_API ma_result ma_sound_set_pan_mode(ma_sound* pSound, ma_pan_mode pan_mode);
 MA_API ma_result ma_sound_set_pitch(ma_sound* pSound, float pitch);
 MA_API ma_result ma_sound_set_position(ma_sound* pSound, ma_vec3 position);
 MA_API ma_result ma_sound_set_rotation(ma_sound* pSound, ma_quat rotation);
@@ -9014,6 +9015,15 @@ MA_API ma_result ma_sound_set_pan(ma_sound* pSound, float pan)
     return ma_panner_set_pan(&pSound->effect.panner, pan);
 }
 
+MA_API ma_result ma_sound_set_pan_mode(ma_sound* pSound, ma_pan_mode pan_mode)
+{
+    if (pSound == NULL) {
+        return MA_INVALID_ARGS;
+    }
+
+    return ma_panner_set_mode(&pSound->effect.panner, pan_mode);
+}
+
 MA_API ma_result ma_sound_set_position(ma_sound* pSound, ma_vec3 position)
 {
     if (pSound == NULL) {