paulxstretch v1.6.0

Changes for PaulXStretch 1.6.0

• Added live output recording feature
• Added selection of directory for recording/capture audio files, and some format options, now defaulting to FLAC
• Added offline render feature to plugin version
• Added Binaural Beats feature (from original paulstretch)
• Added CLAP plugin support (https://github.com/free-audio/clap for info)
• Fixed an initialization bug
• Compile fix for gcc12