Code Format Standardization, Adding get recently created/modified to DealsClient

This release should now be available in pypi version 3.1.2.

This release adds just a couple of new methods to the DealsClient:

DealsClient.get_recently_created
DealsClient.get_recently_modified

which use the following endpoints, with corresponding options being kwargs:
https://developers.hubspot.com/docs/methods/deals/get_deals_created
https://developers.hubspot.com/docs/methods/deals/get_deals_modified