This commit improves the application's robustness by enhancing data handling and adding error logging.
Specifically, it:
- Updates the project version to 1.0.4 in `pyproject.toml` and `setup.py`.
- Removes redis from requirements.txt
- Improves data parsing in `KeyService.parse_hash_data` to handle None values and simplify the logic.
- Adds error logging to `KeyService.parse_hash_data` and `KeyService.process_list_values` to catch and log parsing errors.
- Modifies `KeyService.process_list_values` to ensure the return value is always a list.
- Adds try-except blocks in `get_keys` and `get_key_value` routes to handle potential exceptions during key processing and log warnings.
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