# Changelog

## 0.13.17 <Badge text="beta" type="success" />

Released on November 24, 2020.

### Features

- Improved support for Tasks returning multiple results - [#3697](https://github.com/PrefectHQ/prefect/pull/3697)

### Enhancements

- Allow chaining of `Task` imperative dependency calls - [#3696](https://github.com/PrefectHQ/prefect/pull/3696)
- Add `task_definition_arn` to `ECSRun` run-config - [#3681](https://github.com/PrefectHQ/prefect/pull/3681)
- Rerun `resource_manager` tasks when restarting flows from failed - [#3689](https://github.com/PrefectHQ/prefect/pull/3689)
- Raise nice warning if user passes `Task` instance to `Task` constructor, rather than when calling the `Task` (or using `Task.map`/`Task.set_dependencies`) - [#3691](https://github.com/PrefectHQ/prefect/pull/3691)
- Always use tenant slug in output of Client `get_cloud_url` function - [#3692](https://github.com/PrefectHQ/prefect/pull/3692)

### Task Library

- Add enhancement to `StartFlowRun` task to create link artifact for started flow run - [#3692](https://github.com/PrefectHQ/prefect/pull/3692)
- Add a new postgres task `PostgresExecuteMany` - [#3703](https://github.com/PrefectHQ/prefect/pull/3703)
- Add debug logging for Docker tasks `PullImage` and `BuildImage` - [#3672](https://github.com/PrefectHQ/prefect/pull/3672)
- `ShellTask` returns output on failure - [#3649](https://github.com/PrefectHQ/prefect/pull/3649)
- `ShellTask` allows streaming of output independently of the number of lines returned - [#3649](https://github.com/PrefectHQ/prefect/pull/3649)

### Fixes

- Make `serialized_hash` handle unordered task sets correctly - [#3682](https://github.com/PrefectHQ/prefect/pull/3682)
- Docker storage build error logs were not always displayed - [#3693](https://github.com/PrefectHQ/prefect/pull/3693)
- Fix automatic quoting of Docker storage environment variable values - [#3694](https://github.com/PrefectHQ/prefect/pull/3694)
- Use `exist_ok` flag in `os.makedirs` to avoid race condition in local storage class - [#3679](https://github.com/PrefectHQ/prefect/pull/3679)

### Contributors

- [Faris ALSaleem](https://github.com/FarisALSaleem)
- [R Max Espinoza](https://github.com/rmax)
- [Takayuki Hirayama](https://github.com/yukihira1992)