used Storage trait for solve
see issue 667
@@ -170,7 +170,7 @@ where DefaultAllocator: Allocator<N, D, D> + Allocator<N, D>
b: &Matrix<N, R2, C2, S2>,
) -> Option<MatrixMN<N, R2, C2>>
where
- S2: StorageMut<N, R2, C2>,
+ S2: Storage<N, R2, C2>,
ShapeConstraint: SameNumberOfRows<R2, D>,
DefaultAllocator: Allocator<N, R2, C2>,
{
