Add back old compat

Author: 1-Bart-1

NEWS.md

@@ -1,3 +1,7 @@
+## VortexStepMethod v3.1.1 2025-04-20
+### Added
+- add back compat entry v3 for RecursiveArrayTools
+
 ## VortexStepMethod v3.1.0 2025-04-19
 
 ### Breaking

Project.toml

@@ -1,7 +1,7 @@
 name = "VortexStepMethod"
 uuid = "ed3cd733-9f0f-46a9-93e0-89b8d4998dd9"
 authors = ["1-Bart-1 <bart@vandelint.net>", "Oriol Cayon and contributors"]
-version = "3.1.0"
+version = "3.1.1"
 
 [workspace]
 projects = ["examples", "examples_cp", "docs", "test"]
@@ -58,7 +58,7 @@ Parameters = "0.12"
 Pkg = "1"
 PreallocationTools = "1.1.2"
 PrecompileTools = "1.2.1"
-RecursiveArrayTools = "4"
+RecursiveArrayTools = "3, 4"
 SciMLBase = "3"
 Serialization = "1"
 StaticArrays = "1"