Update code to reflect upstream changes to Rotations

[Evizero]

It looks like the tests fail for new some reason. (I have yet to look into it)

autorange: Error During Test
  Got an exception of type MethodError outside of a @test
  MethodError: Rotations.RotMatrix{2,Float64,4}(::StaticArrays.SArray{Tuple{2,2},Float64,2,4}) is ambiguous. Candidates:
    (::Type{Rotations.RotMatrix{N,T,L}})(x::AbstractArray) where {N, T, L} in Rotations at /home/csto/.julia/v0.6/Rotations/src/core_types.jl:78
    (::Type{SA})(a::StaticArrays.StaticArray) where SA<:StaticArrays.StaticArray in StaticArrays at /home/csto/.julia/v0.6/StaticArrays/src/convert.jl:4
  Possible fix, define
    (::Type{Rotations.RotMatrix{N,T,L}})(::StaticArrays.StaticArray)
  Stacktrace:
   [1] macro expansion at /home/csto/.julia/v0.6/ImageTransformations/test/autorange.jl:108 [inlined]

[Evizero]

solved itself with the merge and tag of JuliaGeometry/Rotations.jl#50