Adds unit tests and updates GHA · tomaroberts/nii2dcm@765af04

Lint with flake8: nii2dcm/modules/image_plane.py#L23

E501 line too long (144 > 127 characters)

Lint with flake8: tests/test_dcm.py#L21

E302 expected 2 blank lines, found 1

Lint with flake8: tests/test_dcm_writer.py#L18

E302 expected 2 blank lines, found 1

Lint with flake8: tests/test_nii.py#L11

E302 expected 2 blank lines, found 1

Lint with flake8: tests/test_run.py#L2

E401 multiple imports on one line

Lint with flake8: tests/test_run.py#L14

E302 expected 2 blank lines, found 1

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, actions/setup-python@v4, rbialon/flake8-annotations@v1. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

Lint with flake8: nii2dcm/dcm.py#L211

W291 trailing whitespace

Lint with flake8: nii2dcm/dcm.py#L304

W391 blank line at end of file

Lint with flake8: nii2dcm/modules/general_image.py#L29

W391 blank line at end of file

Lint with flake8: nii2dcm/modules/general_reference.py#L20

W391 blank line at end of file

Lint with flake8: nii2dcm/modules/general_study.py#L23

W391 blank line at end of file

Lint with flake8: nii2dcm/modules/mr_image.py#L34

W293 blank line contains whitespace