Deprecate AutoTapir

Author: willtebbutt

src/dense.jl

@@ -351,8 +351,8 @@ mode(::AutoSymbolics) = SymbolicMode()
 
 Tapir.jl has been renamed to Mooncake.jl. Please use `AutoMooncake` instead of this type.
 """
-Base.@kwdef struct AutoTapir <: AbstractADType
-    safe_mode::Bool = true
+struct AutoTapir <: AbstractADType
+    safe_mode::Bool
 end
 
 mode(::AutoTapir) = ReverseMode()

src/legacy.jl

@@ -37,4 +37,9 @@ function AutoModelingToolkit(; obj_sparse::Bool = false, cons_sparse::Bool = fal
     return mtk_to_symbolics(obj_sparse, cons_sparse)
 end
 
-@deprecate AutoTapir AutoMooncake
+function AutoTapir(; safe_mode=true)
+    Base.depwarn(
+        "AutoTapir is deprecated in favour of AutoMooncake.", :AutoTapir; force=false
+    )
+    return AutoTapir(safe_mode)
+end