Added gtirb per issue #1806

quicklisp · quicklisp · commit 85690573a101 · 2020-03-23T08:20:05.000-04:00
diff --git a/projects/gtirb/source.txt b/projects/gtirb/source.txt
@@ -0,0 +1 @@
+branched-git https://github.com/grammatech/gtirb.git quicklisp

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+branched-git https://github.com/grammatech/gtirb.git quicklisp`