update Pluto compat (#132)

Author: eahenle

Project.toml

@@ -1,7 +1,7 @@
 name = "PoreMatMod"
 uuid = "2de0d7f0-0963-4438-8bc8-7e7ffe3dc69a"
 authors = ["SimonEnsemble <cory.simon@oregonstate.edu>"]
-version = "0.2.14"
+version = "0.2.15"
 
 [deps]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
@@ -27,7 +27,7 @@ DataFrames = "1"
 FIGlet = "~0.2.0"
 Graphs = "1.4"
 MetaGraphs = "0.7"
-Pluto = "0.18"
+Pluto = "0.18, 0.19"
 Reexport = "1.1"
 StatsBase = "0.33"
 Xtals = "~0.3.0, ~0.4.0"