Test compiler
clang++ -Wextra -Werror -std=c++20 nuo.cc -o build/nuo && ./build/nuo --test
Compile & run playground code
./build/nuo --compile playground/main.nuo && \
clang -Wextra -Werror -std=c99 playground/main.nuo.c -o build/main && \
./build/main