Added cl-zstd per issue #1955

quicklisp · quicklisp · commit 7029902cdc9f · 2021-01-16T13:06:57.000-05:00
diff --git a/projects/cl-zstd/source.txt b/projects/cl-zstd/source.txt
@@ -0,0 +1 @@
+git https://github.com/glv2/cl-zstd.git

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+git https://github.com/glv2/cl-zstd.git`