… support

…ntation

…rt OptimizelyFactory

- test_optimizely.py fixed to expect new Decision objects

…er and decision service

… and ensure key is of bytes type in hash128

…ue function

…essages and add a test for handling 500 errors

…lt and updating get_variation return type to include detailed error information

…rdingly

-test cases changed to handle return type dicts of DecisionResult and VariationResult

This reverts commit d2fc631.

…just related logic for improved variation handling"

This reverts commit b901c5f.