Require lower bound for observed functions to exist

Author: ChrisRackauckas

Project.toml

@@ -68,7 +68,7 @@ Reexport = "0.2, 1"
 Requires = "1.0"
 RuntimeGeneratedFunctions = "0.4.3, 0.5"
 SafeTestsets = "0.0.1"
-SciMLBase = "1.3"
+SciMLBase = "1.26.2"
 Setfield = "0.7, 0.8"
 SpecialFunctions = "0.7, 0.8, 0.9, 0.10, 1.0, 2"
 StaticArrays = "0.10, 0.11, 0.12, 1.0"