ast: formatting; main: explicit verbosity

test.sh

@@ -1,6 +1,8 @@
 #!/usr/bin/env bash
 
+export DOUGHLANG_VERBOSE="${DOUGHLANG_VERBOSE:-0}"
+
 for file in $(find "$@" -type f); do
     echo $file;
-    cat $file | cargo run -q;
+    cat $file | cargo run -q $CARGO_FLAGS;
 done