CompatHelper: bump compat for DataFrames to 1, (keep existing compat)

Author: CompatHelper Julia

Project.toml

@@ -61,7 +61,7 @@ CategoricalArrays = "0.7, 0.8"
 ClassImbalance = "0.8"
 Combinatorics = "1"
 DataDeps = "0.7"
-DataFrames = "0.20, 0.21"
+DataFrames = "0.20, 0.21, 1"
 DecisionTree = "0.10"
 DefaultApplication = "1"
 Distributions = "0.21, 0.22, 0.23"