CompatHelper: add new compat entry for Coverage at version 1, (keep existing compat)

Author: CompatHelper Julia

Project.toml

@@ -49,6 +49,7 @@ CSV = "0.10"
 CodecBzip2 = "0.8"
 CodecLz4 = "0.4"
 CodecZlib = "0.7"
+Coverage = "1"
 DataStructures = "0.18"
 Distributions = "0.25"
 Downloads = "1"