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### Services * Synced the V2 SDK with latest AWS service API definitions. ### SDK Breaking changes * This update includes breaking changes to how the DynamoDB AttributeValue (un)marshier handles empty collections. ### Deprecations * `service/s3/s3crypto`: Deprecates the crypto client from the SDK ([#394](#394)) * s3crypto client is now deprecated and may be removed from the future versions of the SDK. * `aws`: Removes plugin credential provider ([#391](#391)) * Removing plugin credential provider from the v2 SDK developer preview. This feature may be made available as a separate module. * Removes support for deprecated Go versions ([#393](#393)) * Removes support for Go version specific files from the SDK. Also removes irrelevant build tags, and updates the README.md file. * Raises the minimum supported version to Go 1.11 for the SDK. Older versions may work, but are not actively supported ### SDK Features * `service/s3/s3manager`: Add Upload Buffer Provider ([#404](#404)) * Adds a new `BufferProvider` member for specifying how part data can be buffered in memory. * Windows platforms will now default to buffering 1MB per part to reduce contention when uploading files. * Non-Windows platforms will continue to employ a non-buffering behavior. * `service/s3/s3manager`: Add Download Buffer Provider ([#404](#404)) * Adds a new `BufferProvider` member for specifying how part data can be buffered in memory when copying from the http response body. * Windows platforms will now default to buffering 1MB per part to reduce contention when downloading files. * Non-Windows platforms will continue to employ a non-buffering behavior. * `service/dynamodb/dynamodbattribute`: New Encoder and Decoder Behavior for Empty Collections ([#401](#401)) * The `Encoder` and `Decoder` types have been enhanced to support the marshaling of empty structures, maps, and slices to and from their respective DynamoDB AttributeValues. * This change incorporates the behavior changes introduced via a marshal option in V1 ([#2834](aws/aws-sdk-go#2834)) ### SDK Enhancements * `internal/awsutil`: Add suppressing logging sensitive API parameters ([#398](#398)) * Adds suppressing logging sensitive API parameters marked with the `sensitive` trait. This prevents the API type's `String` method returning a string representation of the API type with sensitive fields printed such as keys and passwords. * Related to [aws/aws-sdk-go#2310](aws/aws-sdk-go#2310) * Fixes [#251](#251) * `aws/request` : Retryer is now a named field on Request. ([#393](#393)) * `service/s3/s3manager`: Adds `sync.Pool` to allow reuse of part buffers for streaming payloads ([#404](#404)) * Fixes [#402](#402) * Uses the new behavior introduced in V1 [#2863](aws/aws-sdk-go#2863) which allows the reuse of the sync.Pool across multiple Upload request that match part sizes. ### SDK Bugs * `service/s3/s3manager`: Fix index out of range when a streaming reader returns -1 ([#378](#378)) * Fixes the S3 Upload Manager's handling of an unbounded streaming reader that returns negative bytes read. * `internal/ini`: Fix ini parser to handle empty values [#406](#406) * Fixes incorrect modifications to the previous token value of the skipper. Adds checks for cases where a skipped statement should be marked as complete and not be ignored. * Adds tests for nested and empty field value parsing, along with tests suggested in [aws/aws-sdk-go#2801](aws/aws-sdk-go#2801)
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