FIX: Internally cast to required DType

[Squadrick]

Fixes #623

[Squadrick]

FAIL: Found 4 non-whitelited pylint errors:
tensorflow_addons/text/crf_test.py:212: [E1136(unsubscriptable-object), CrfTest.testCrfLogLikelihood] Value 'inputs.shape' is unsubscriptable

tensorflow_addons/text/crf_test.py:213: [E1136(unsubscriptable-object), CrfTest.testCrfLogLikelihood] Value 'inputs.shape' is unsubscriptable

tensorflow_addons/text/crf_test.py:244: [E1136(unsubscriptable-object), CrfTest.testViterbiDecode] Value 'inputs.shape' is unsubscriptable

tensorflow_addons/text/crf_test.py:245: [E1136(unsubscriptable-object), CrfTest.testViterbiDecode] Value 'inputs.shape' is unsubscriptable

Pylint fails for python3, but it works fine for python2. Any idea why the error arises?

[seanpmorgan]

LGTM, thanks! Regarding the lint error it looks like it might be upstream bug in pylint:
pylint-dev/pylint#3139

For now could you just disable the error by surrounding with

# pylint: disable=E1136
...
# pylint: enable=E1136

[Squadrick]

@seanpmorgan Yeah, that fixed it. I've added a TODO to remove the pylint directives once the issue is resolved.

[seanpmorgan]

LGTM thanks for the fix!