Merge pull request #442 from SciML/compathelper/new_version/2021-09-03-00-45-27-907-01031471719

CompatHelper: bump compat for NeuralPDE to 4 for package models, (keep existing compat)

Author: ChrisRackauckas

tutorials/models/Project.toml

@@ -32,7 +32,7 @@ ForwardDiff = "0.10"
 Latexify = "0.13, 0.14, 0.15"
 ModelingToolkit = "3.10, 4.0, 5.0, 6"
 NLsolve = "4.4"
-NeuralPDE = "2, 3.0"
+NeuralPDE = "2, 3.0, 4"
 Optim = "0.21, 0.22, 1.0"
 OrdinaryDiffEq = "5.41"
 Plots = "1.4"