add sortperm and partialsortperm rrule

Author: andrewrosemberg

src/rulesets/Base/nondiff.jl

@@ -289,6 +289,7 @@ VERSION >= v"1.3" && @non_differentiable istaskfailed(::Task)
 VERSION >= v"1.4" && @non_differentiable only(::Char)
 @non_differentiable open(::Any)
 
+@non_differentiable partialsortperm(::AbstractArray{Any}, ::Union{Integer, OrdinalRange})
 @non_differentiable pointer(::Any)
 @non_differentiable popdisplay(::AbstractDisplay)
 @non_differentiable position(::Base.Filesystem.File)
@@ -350,6 +351,7 @@ end
 @non_differentiable size(::Any, ::Any)
 @non_differentiable sizeof(::Any)
 @non_differentiable sleep(::Any)
+@non_differentiable sortperm(::AbstractArray{Any})
 @non_differentiable split(::AbstractString)
 @non_differentiable split(::AbstractString, ::AbstractChar)
 @non_differentiable splitdir(::AbstractString)