Add support for Julia 0.7

[Datseris]

Opening this mainly for tracking purposes, so I know when I can update my packages.

using NearestNeighbors
data = rand(3, 10^4)

julia> kdtree = KDTree(data; leafsize = 10)
┌ Warning: `Array{T, 2}(m::Int, n::Int) where T` is deprecated, use `Array{T, 2}(undef, m, n)` instead.
│   caller = Type at <missing>:0 [inlined]
└ @ Core <missing>:0
┌ Warning: `reinterpret(::Type{T}, a::Array{S}, dims::NTuple{N, Int}) where {T, S, N}` is deprecated, use `reshape(reinterpret(T, vec(a)), dims)` instead.
│   caller = #KDTree#13(::Int64, ::Bool, ::Bool, ::Array{Float64,2}, ::Symbol, ::Type, ::Array{Float64,2}, ::Euclidean) at kd_tree.jl:79
└ @ NearestNeighbors kd_tree.jl:79
ERROR: MethodError: no method matching KDTree(::Base.ReinterpretArray{StaticArrays.SArray{Tuple{3},Float64,1,3},1,Float64,Array{Float64,1}}, ::Euclidean; leafsize=10, storedata=true, reorder=true, reorderbuffer=StaticArrays.SArray{Tuple{3},Float64,1,3}[], indicesfor=:data)
Closest candidates are:
  KDTree(::Array{V<:AbstractArray,1}, ::M<:Union{Chebyshev, Cityblock, Euclidean, Minkowski}; leafsize, storedata, reorder, reorderbuffer, indicesfor) where {V<:AbstractArray, M<:Union{Chebyshev, Cityblock, Euclidean, Minkowski}} at C:\Users\datseris\.julia\packages\NearestNeighbors\nEb3\src\kd_tree.jl:34
  KDTree(::Array{T<:AbstractFloat,2}, ::M<:Union{Chebyshev, Cityblock, Euclidean, Minkowski}; leafsize, storedata, reorder, reorderbuffer, indicesfor) where {T<:AbstractFloat, M<:Union{Chebyshev, Cityblock, Euclidean, Minkowski}} at C:\Users\datseris\.julia\packages\NearestNeighbors\nEb3\src\kd_tree.jl:77
Stacktrace:
 [1] #KDTree#13(::Int64, ::Bool, ::Bool, ::Array{Float64,2}, ::Symbol, ::Type, ::Array{Float64,2}, ::Euclidean) at C:\Users\datseris\.julia\packages\NearestNeighbors\nEb3\src\kd_tree.jl:85
 [2] Type at .\<missing>:0 [inlined] (repeats 2 times)
 [3] top-level scope

[KristofferC]

See #60

[Datseris]

thanks.

[Datseris]

Is there any update on this? 0.7 beta is out and we want to move the DynamicalSystems repos there as well. (we have a massively heavy dependency on NearestNeighbors)

[KristofferC]

Yeah, I am upgrading some packages today, will try get to this one as well.

[Datseris]

Awesome, thanks a lot for the effort!

[KristofferC]

@Datseris #61 should be usable for 0.7.

[KristofferC]

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