Cloudpathlib

- Fixed error when "directories" created on AWS S3 were reported as files. ([Issue 148](https://github.com/drivendataorg/cloudpathlib/issues/148), [PR #190](https://github.com/drivendataorg/cloudpathlib/pull/190))
- Fixed bug where GCE machines can instantiate default client, but we don't attempt it. ([Issue 191](https://github.com/drivendataorg/cloudpathlib/issues/191)
- Support `AWS_ENDPOINT_URL` environment variable to set the `endpoint_url` for `S3Client`. ([PR 193](https://github.com/drivendataorg/cloudpathlib/pull/193))

- Fixed error where `BlobProperties` type hint causes import error if Azure dependencies not installed.

- Fixed error when using `rmtree` on nested directories for Google Cloud Storage and Azure Blob Storage. ([Issue 184](https://github.com/drivendataorg/cloudpathlib/issues/184), [PR #185](https://github.com/drivendataorg/cloudpathlib/pull/185))
- Fixed broken builds due mypy errors in azure dependency ([PR 177](https://github.com/drivendataorg/cloudpathlib/pull/177))
- Fixed dev tools for building and serving documentation locally ([PR 178](https://github.com/drivendataorg/cloudpathlib/pull/178))

- Fixed error when importing `cloudpathlib` for missing `botocore` dependency when not installed with S3 dependencies. ([PR 168](https://github.com/drivendataorg/cloudpathlib/pull/168))

- Fixed absolute documentation URLs to point to the new versioned documentation pages.
- Fixed bug where `no_sign_request` couldn't be used to download files since our code required list permissions to the bucket to do so. ([Issue 169](https://github.com/drivendataorg/cloudpathlib/issues/169), [PR #168](https://github.com/drivendataorg/cloudpathlib/pull/168)).

- Added `no_sign_request` parameter to `S3Client` instantiation for anonymous requests for public resources on S3. See [documentation](https://cloudpathlib.drivendata.org/stable/api-reference/s3client/#cloudpathlib.s3.s3client.S3Client.__init__) for more details. ([164](https://github.com/drivendataorg/cloudpathlib/pull/164))