Added messagebox per issue #1886

quicklisp · quicklisp · commit 98e2f33cf852 · 2020-08-12T08:49:10.000-04:00
diff --git a/projects/messagebox/source.txt b/projects/messagebox/source.txt
@@ -0,0 +1 @@
+git https://github.com/Shinmera/messagebox.git

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+git https://github.com/Shinmera/messagebox.git`