⚡ Add `date` in `historical_data` response

[alvarobartt]

✨ Features

• Add date key-value pair in historical_data's output

🔗 Linked Issue

8

🧪 Tests

• [X] Did you implement unit tests if required?

If the above checkbox is checked, describe how you unit tested it.

Add value in the list for the assertion to pass, so that when historical_data's output keys are checked, date is checked too, otherwise the unit tests will fail.

[OGsiji]

Hey @alvarobartt, Just to mention, I haven't seen the date added to the latest update. Thanks

[alvarobartt]

Hi @OGsiji can you please check the latest investiny release? Install it with pip install investiny --upgrade please, thanks!