Move MutableArithmetics import to top of module (#318)

Author: odow

src/MOI_wrapper/hermitian_complex_psd_cone_bridge.jl

@@ -34,8 +34,6 @@ function MOI.dimension(x::ComplexPositiveSemidefiniteConeTriangle)
     return x.side_dimension^2
 end
 
-import MutableArithmetics as MA
-
 function MOI.Utilities.set_dot(
     x::AbstractVector{S},
     y::AbstractVector{T},

src/SCS.jl

@@ -6,6 +6,7 @@
 module SCS
 
 import MathOptInterface as MOI
+import MutableArithmetics as MA
 import SCS_jll: libscsdir, libscsindir
 import SparseArrays