Use tighter upper bound

Alan Schelten · Alan Schelten · commit 48b0d24899a3 · 2020-09-23T09:03:17.000+02:00
diff --git a/Project.toml b/Project.toml
@@ -8,8 +8,8 @@ DataStructures = "864edb3b-99cc-5e75-8d2d-829cb0a9cfe8"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 
 [compat]
-julia = "1.3"
-DataStructures = ">=0.15, <1"
+julia = "1.4"
+DataStructures = "0.15 - 0.18.6"
 
 [extras]
 StringDistances = "88034a9c-02f8-509d-84a9-84ec65e18404"
