Merge pull request #60 from SciML/compathelper/new_version/2020-04-12-15-04-29-150-679496592

CompatHelper: bump compat for "ModelingToolkit" to "2.0"

Author: ChrisRackauckas

Project.toml

@@ -16,7 +16,7 @@ Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 DiffEqBase = "6"
 DiffEqBiological = "4.0"
 DiffEqOperators = "4"
-ModelingToolkit = "0.9, 0.10, 1.0"
+ModelingToolkit = "0.9, 0.10, 1.0, 2.0"
 julia = "1"
 
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