Gsutil

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New Features
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- Switched to Using V4 signature as default for S3 (981)

Bug Fixes
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- Updated rsa library to release-4.0 (992)
- Updated test script to install pyenv if missing for kokoro (990)
- Fixed print ordering in kms set by using print instead of
text_util.print_to_fd (974)

Other Changes
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- Several documentation updates and clarifications (969) (987)

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New Features
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- Added support for service account impersonation for signurl.

Bug Fixes
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- Fixed an issue with rsync throwing error when the destination url is a prefix of
an existing object.

Other Changes
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- Several documentation updates and clarifications.

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Bug Fixes
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- Fixed special character handling in filenames on Windows with Python3.
- Fixed issue while transferring binary files from S3 with Python3.
- Fixed KMS tests, so that keys are created in the same region as their buckets.

Other Changes
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- Several documentation updates and clarifications.

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New Features
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- Added support for the new archive storage class.

Other Changes
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- Several documentation updates and clarifications.

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Bug Fixes
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- Fixed issue with domain permissions functionality.

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Bug Fixes
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- Fixed exception when using CMEK with resumable uploads.
- Fixed alias for new ubla command.
- Fixed default RDNS behavior for backwards compatibility with 4.42 and earlier.

Other Changes
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- Improvements to continuous integration workflow.