add some more DEDataArray linear algebra

Author: ChrisRackauckas

src/data_array.jl

@@ -127,6 +127,7 @@ end
 LinearAlgebra.ldiv!(A::DEDataArray,F::Factorization, B::DEDataArray) = ldiv!(A.x,F,B.x)
 LinearAlgebra.ldiv!(F::Factorization, B::DEDataArray) = ldiv!(F, B.x)
 LinearAlgebra.ldiv!(F::Factorization,A::Base.ReshapedArray{T1,T2,T3,T4}) where {T1,T2,T3<:DEDataArray,T4} = ldiv!(F,vec(A.parent.x))
+Base.:+(::LinearAlgebra.UniformScaling,x::DEDataArray) = DiffEqBase.copy_fields(I + x.x,x)
 
 Base.unsafe_convert(::Type{Ptr{T}}, a::DEDataArray{T}) where {T} = Base.unsafe_convert(Ptr{T}, getfield(a,:x))
 ArrayInterface.zeromatrix(x::DEDataArray) = ArrayInterface.zeromatrix(x.x)