CompatHelper: bump compat for DataStructures to 0.19, (keep existing compat)

Author: CompatHelper Julia

Project.toml

@@ -49,7 +49,7 @@ CSV = "0.10"
 CodecBzip2 = "0.8"
 CodecLz4 = "0.4"
 CodecZlib = "0.7"
-DataStructures = "0.18"
+DataStructures = "0.18, 0.19"
 Distributions = "0.25"
 Downloads = "1"
 ElasticArrays = "1.2"