CuPy issues in `test_combiner`

[mwcraig]

Have not tried to track down root causes for these...

• test_combiner_dtype - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_mask - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_1Dweights - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_pixelwise_weights - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_minmax - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_sigmaclip_high - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_sigmaclip_single_pix - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_sigmaclip_low - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_median - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_average - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_sum - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_sum_weighted - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_sum_weighted_by_pixel - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_mask_average - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_with_scaling - TypeError: unsupported operand type(s) for <<: 'ndarray' and 'IrreducibleUnit'
• test_combiner_mask_median - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_mask_sum - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combine_average_fitsimages - TypeError: 'a' must be a cupy.ndarray object, not <class 'numpy.ndarray'>.
• test_combine_numpyndarray - TypeError: 'a' must be a cupy.ndarray object, not <class 'numpy.ndarray'>.
• test_combiner_result_dtype - TypeError: unsupported operand type(s) for <<: 'ndarray' and 'IrreducibleUnit'
• test_combiner_image_file_collection_input - TypeError: data object array([[-0.98912135, -0.36778665, 1.28792526, ..., -1.17368868,
• test_combine_image_file_collection_input - TypeError: data object array([[-0.98912135, -0.36778665, 1.28792526, ..., -1.17368868,
• test_combine_average_ccddata - TypeError: 'a' must be a cupy.ndarray object, not <class 'numpy.ndarray'>.
• test_combine_limitedmem_fitsimages - TypeError: 'a' must be a cupy.ndarray object, not <class 'numpy.ndarray'>.
• test_combine_limitedmem_scale_fitsimages - TypeError: 'a' must be a cupy.ndarray object, not <class 'numpy.ndarray'>.
• test_average_combine_uncertainty - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_median_combine_uncertainty - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_sum_combine_uncertainty - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combine_ccd_with_uncertainty_and_mask_from_fits[function] - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combine_ccd_with_uncertainty_and_mask_from_fits[mean] - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combine_result_uncertainty_and_mask[average_combine-True] - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combine_result_uncertainty_and_mask[average_combine-False] - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combine_result_uncertainty_and_mask[median_combine-True] - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combine_result_uncertainty_and_mask[median_combine-False] - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combine_result_uncertainty_and_mask[sum_combine-True] - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combine_result_uncertainty_and_mask[sum_combine-False] - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combine_overwrite_output - TypeError: data object array([[1., 1., 1.],
• test_combiner_uncertainty_average - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_uncertainty_average_mask - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_uncertainty_median_mask - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_uncertainty_sum_mask - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_3d - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_3d_combiner_with_scaling - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_clip_extrema_3d - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_writeable_after_combine[average_combine] - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_writeable_after_combine[median_combine] - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_writeable_after_combine[sum_combine] - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_clip_extrema_alone - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_clip_extrema_via_combine - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_clip_extrema_with_other_rejection - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_combiner_with_scaling_uncertainty[average_combine] - TypeError: unsupported operand type(s) for <<: 'ndarray' and 'IrreducibleUnit'
• test_combiner_with_scaling_uncertainty[median_combine] - TypeError: unsupported operand type(s) for <<: 'ndarray' and 'IrreducibleUnit'
• test_combiner_with_scaling_uncertainty[sum_combine] - TypeError: unsupported operand type(s) for <<: 'ndarray' and 'IrreducibleUnit'
• test_user_supplied_combine_func_that_relies_on_masks[average_combine] - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_user_supplied_combine_func_that_relies_on_masks[median_combine] - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.
• test_user_supplied_combine_func_that_relies_on_masks[sum_combine] - TypeError: Implicit conversion to a NumPy array is not allowed. Please use .get() to construct a NumPy array explicitly.