## Performance Improvements

We've improved the performance of many of the included command-line tools in Chef Workstation along with the performance of the Chef Workstation menubar application.

## Test Kitchen

The Kitchen vCenter driver has been updated to prevent failures while running on Windows hosts.

The Kitchen Azure driver now includes support for setting the public IP SKU with a new `public_ip_sku` driver configuration option thanks to [@simonjefford](https://github.com/simonjefford)! For example:

```yaml

platforms:
  - name: ubuntu-1804
    driver:
      image_urn: Canonical:UbuntuServer:18.04.4-LTS:latest
      vnet_id: /subscriptions/b6e7eee9-YOUR-GUID-HERE-03ab624df016/resourceGroups/pendrica-infrastructure/providers/Microsoft.Network/virtualNetworks/pendrica-arm-vnet
      subnet_id: subnet-10.1.0
      public_ip: true
      public_ip_sku: Standard
```

To learn more about this configuration option, see the [Azure Public IP Documentation](https://docs.microsoft.com/en-us/azure/virtual-network/virtual-network-public-ip-address-upgrade?tabs=option-upgrade-powershell%2Coption-migrate-powershell).

## Chef-CLI

You can now rename the generator directory after generation without breaking generator usage.

## Berkshelf

Several potential race conditions in Berkshelf have been resolved. This may improve the reliability of testing multiple instances in Test Kitchen when Berkshelf is used for cookbook dependency resolution.

## Cookstyle

Cookstyle has been updated with the latest RuboCop engine for improved code issue detection and correction. Additionally, RuboCop's `Lint/ErbNewArguments` cop has been enabled to detect deprecated usage of the ERB class in libraries.