add JSON compat

vchuravy · vchuravy · commit c9756dabe2be · 2020-02-23T11:05:30.000-05:00
diff --git a/Project.toml b/Project.toml
@@ -11,6 +11,7 @@ UUIDs = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
 
 [compat]
 julia = "1"
+JSON  = "0.18, 0.19, 0.20, 0.21"
 
 [extras]
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
