Azure Cosmos DB Python SDK Version 4 is now in preview

[Version 4](https://pypi.org/project/azure-cosmos/#history) of the Azure Cosmos DB Python SDK is now available and includes usability updates to the object model for a better developer experience as well as the ability to use partition keys to scale non-partitioned containers. The SDK is fully open-sourced and part of the Azure SDK for Python repo. Learn more and [get started](https://github.com/Azure/azure-sdk-for-python/tree/master/sdk/cosmos/azure-cosmos#getting-started). Log issues and feedback in the [GitHub repo](https://github.com/Azure/azure-sdk-for-python/tree/master/sdk/cosmos). [Log issues and feedback in the GitHub repo](https://github.com/Azure/azure-sdk-for-python/tree/master/sdk/cosmos) [Get started](https://github.com/Azure/azure-sdk-for-python/tree/master/sdk/cosmos/azure-cosmos#getting-started) * Azure Cosmos DB * Features * [ Azure Cosmos DB](https://azure.microsoft.com/en-gb/products/cosmos-db/)