Merge pull request #18 from JuliaDiffEq/compathelper/new_version/2019-11-22-00-20-46-684-4204529666

CompatHelper: add new compat entry for "DiffEqCallbacks" at version "2.9"

Author: ChrisRackauckas

Project.toml

@@ -16,6 +16,7 @@ StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 
 [compat]
 DiffEqBase = "6"
+DiffEqCallbacks = "2.9"
 FileIO = "1.0"
 OrdinaryDiffEq = "5"
 StaticArrays = "0.12"