Relax GraphPlot version requirements to add 0.3-0.3.1

Author: mossr

Project.toml

@@ -28,7 +28,7 @@ DataFrames = "0.21"
 DataStructures = "0.11,0.12,0.13,0.14,0.15,0.16,0.17"
 Discretizers = "3.0"
 Distributions = "0.17,0.18,0.19,0.20,0.21,0.22,0.23"
-GraphPlot = "0.4,0.4.1"
+GraphPlot = "0.3,0.3.1,0.4,0.4.1"
 IterTools = "1.3"
 LightGraphs = "1.0"
 LightXML = "0.8,0.9"