Changes for Godot4

README.md

SConstruct

demo/Main.tscn

demo/addons/gdpd/bin/gdpd.gdns

demo/addons/gdpd/bin/libgdpd.gdnlib

demo/addons/gdpd/gdpd.gdextension

demo/default_env.tres

demo/icon.png.import

demo/patch1.pd

demo/patch2.pd

demo/project.godot

src/gdlibrary.cpp

src/gdpd.cpp

src/godot-cpp

src/libpd

src/rtaudio/RtAudio.os

update.sh