Merge pull request #33 from rasmushenningsson/DataStructuresCompat

Add DataStructures.jl v0.19 compat

Author: dillondaudert

Project.toml

@@ -12,7 +12,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 
 [compat]
-DataStructures = "0.18"
+DataStructures = "0.18, 0.19"
 Distances = "0.8, 0.9, 0.10"
 Graphs = "1.4"
 Reexport = "0.2, 1.0"