bugfix: clipper now uses threshold consistently

core/Clipper.hpp

@@ -19,13 +19,13 @@ public:
                      float *outRight, uint32_t frames);
 
 private:
-  float clip_;
+  float threshold_;
   float clip(const float in);
   ClipperMode mode_;
 
 public:
-  void setGain(float c) { clip_ = c; }
-  float getGain() const { return clip_; }
+  void setThreshold(float c) { threshold_ = c; }
+  float getThreshold() const { return threshold_; }
   void setMode(ClipperMode m) { mode_ = m; }
   ClipperMode getMode() const { return mode_; }
 };