message: Update WDRC_SingleBand.ino
  WDRC_SingleBand: changed AudioFilterIIR_F32 to AudioFilterBiquad_F32
diff: // GUItool: begin automatically generated code
  AudioInputI2S_F32 i2sAudioIn1; //xy=136,112
  -AudioFilterIIR_F32 iir1; //xy=233,172
  +AudioFilterBiquad_F32 iir1; //xy=233,172
  AudioEffectCompWDRC_F32 compWDRC1; //xy=427,172
  AudioOutputI2S_F32 i2sAudioOut1; //xy=630,174
  AudioConnection_F32 patchCord1(i2sAudioIn1, 0, iir1, 0);
  