updates Chain compat to latest version

Author: rdboyes

Project.toml

@@ -14,7 +14,7 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 StatsBase = "2913bbd2-ae8a-5f71-8c99-4fb6c76f3a91"
 
 [compat]
-Chain = "0.5"
+Chain = "0.6"
 Cleaner = "0.5, 1"
 DataFrames = "1.5"
 MacroTools = "0.5"