Merge pull request #85 from SciML/compathelper/new_version/2021-08-07-00-47-23-930-674154042

CompatHelper: bump compat for "ModelingToolkit" to "6"

Author: ChrisRackauckas

Project.toml

@@ -18,7 +18,7 @@ DataStructures = "0.17, 0.18"
 DiffEqBase = "6.5"
 DocStringExtensions = "0.8"
 Latexify = "0.14, 0.15"
-ModelingToolkit = "4.0, 5"
+ModelingToolkit = "4.0, 5, 6"
 Reexport = "0.2, 1.0"
 SciMLBase = "1.3"
 julia = "1.3"