Add [compat]

RuQing Xu · RuQing Xu · commit 7e978f846d83 · 2020-11-11T01:57:36.000+09:00
diff --git a/Project.toml b/Project.toml
@@ -11,3 +11,6 @@ Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 blis_jll = "6136c539-28a5-5bf0-87cc-b183200dce32"
+
+[compat]
+julia = "1.4"
