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    New Feature 
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    Resolution: Fixed
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    Major 
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    None
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        Blue Ocean 1.8.0
For Declarative 1.3 (JENKINS-46809), we're adding support for sequential groups of stages, either as part of a set of parallel stages or on its own in a top-level stage. I won't bother going into all the rationale behind it. =) See the Declarative PR for the relevant changes, examples, discussion, etc. 
This will require changes for both visualization and the editor:
- Visualization - see my pathetic attempts at mockups attached here. jamesdumay probably will come up with something better in like five seconds. =)
- Editor - Should be something like we have for parallel stages - reordering would be good too.
- is blocked by
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                    JENKINS-49779 Support for sequential stage groups in BlueOcean nodes API -         
- Fixed but Unreleased
 
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- is duplicated by
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                    JENKINS-38442 View sequential stages in the pipeline visualization graph -         
- Closed
 
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- is related to
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                    JENKINS-53048 Parallel sequential stages not rendering correctly -         
- Closed
 
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- relates to
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                    JENKINS-46809 Allow sequential stages inside parallel in Declarative syntax -         
- Closed
 
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                    JENKINS-53127 Parallel sequential stages should display stage label -         
- Closed
 
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- links to