feat: add strict mode

[LDeakin]

Closes #108

[ilan-gold]

Just some test cleanup would be nice but otherwise good

[ilan-gold]

I think these two sets of tests could be smashed together and parametrized by codec_pipeline_strict so something like:

with pytest.raises(UnsupportedDataTypeError) if  codec_pipline_strict else null_context()
        arr[:] = data
if not codec_pipeline_strict:
        result = arr[:]
        assert np.array_equal(result, data)