Contents：
Release 1
Release time: April 25, 2019 17:03:55
This release contains:
Improvement to existing documentation.
New APIs:
- CreateKey
- Decrypt
- DescribeKey
- DescribeKeys
- DisableKey
- DisableKeyRotation
- DisableKeys
- EnableKey
- EnableKeyRotation
- EnableKeys
- Encrypt
- GenerateDataKey
- GetKeyRotationStatus
- GetServiceStatus
- ListKeyDetail
- ListKeys
- ReEncrypt
- UpdateAlias
- UpdateKeyDescription
New data structures:
