deprecate TArray and TRef.

Author: KDr2

src/tarray.jl

@@ -27,6 +27,11 @@ Array(ta)                   # convert to 4-element Array{Int64,1}: [1, 2, 3, 4]
 """
 mutable struct TArray{T, N, A <: AbstractArray{T, N}} <: AbstractArray{T, N}
     data::A
+
+    function TArray(data::A) where {T, N, A <: AbstractArray{T, N}}
+        Base.depwarn("`TArray` is deprecated, please overload `tape_copy` for `Array` and use `Array` instead.", :TArray)
+        new{T, N, A}(data)
+    end
 end
 
 TArray{T}(d::Integer...) where T = TArray(T, d)

src/tref.jl

@@ -36,6 +36,11 @@ d["A"] = 10
 """
 mutable struct TRef{T}
     val::T
+
+    function TRef(val::T) where {T}
+        Base.depwarn("`TRef` is deprecated, please overload `tape_copy` for `Ref` and use `Ref` instead.", :TRef)
+        new{T}(val)
+    end
 end
 
 Base.get(r::TRef) = r.val