pipe_base v22.0 (2021-04-01)
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New Feature
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* Add ways to test a PipelineTask's init inputs/outputs [DM-23156]
* Pipelines can now support URIs [DM-28036]
* Graph files can now be loaded and saved via URIs [DM-27682]
* A new format for saving graphs has been developed (with a ``.qgraph`` extension). This format supports the ability to read a subset of a graph from an object store. [DM-27784]
* Graph building with a pipeline that specifies an instrument no longer needs an explicit instrument to be given. [DM-27985]
* A ``parameters`` section has been added to pipeline definitions. [DM-27633]