Renku

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This release brings improvements and bug fixes to Renku UI.

Features
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* **UI**: Save session button (`1957 <https://github.com/SwissDataScienceCenter/renku-ui/issues/1957>`_, `#1985 <https://github.com/SwissDataScienceCenter/renku-ui/issues/1985>`_, `#2040 <https://github.com/SwissDataScienceCenter/renku-ui/issues/2040>`_)
* **UI**: Add environment variables when starting a session (`2058 <https://github.com/SwissDataScienceCenter/renku-ui/issues/2058>`_, `#2066 <https://github.com/SwissDataScienceCenter/renku-ui/issues/2066>`_)
* **UI**: Add progress indicator when starting a session (`1879 <https://github.com/SwissDataScienceCenter/renku-ui/issues/1879>`_, `#2054 <https://github.com/SwissDataScienceCenter/renku-ui/issues/2054>`_)
* **Sessions**: Detailed session start status breakdown (`1289 <https://github.com/SwissDataScienceCenter/renku-notebooks/issues/1289>`_)

Bug fixes
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* **Renku Core Service**, **Renku CLI**: Fixes Dockerfile Renku version when force setting a template to update an old project
* **Renku CLI**: Allow passing in multiple custom metadata entries for Project and Dataset entities
* **Knowledge Graph**: fixes improving stability
* **UI**: Restore notebook rendering (`2052 <https://github.com/SwissDataScienceCenter/renku-ui/issues/2052>`_)

Individual components
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This release includes fixes and improvements for the renku gateway service that deals with authentication
It also includes improvements to the renku documentation about CLI plugins

Features
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* **Documentation**: add CLI plugins section

Bug fixes
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* **Gateway**: re-initialize keycloak server-side client if needed
* **Gateway**: remove anonymous user ID creation because it is handled by the ui-server
* **Tests**: Modify acceptance test wait duration for locating a terminal in a session

Individual components
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This release comes with the first step towards a new data organization inside the Renku Knowledge Graph. Although completely transparent for the users at this point, the change brings substantial additions to the internal processes within the Knowledge Graph as well as adds a migration which copies all the data in the old format to the new one. For the time being, data in both the new and the old format will be kept in sync, however the API will still use the data in the old format.

Features
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* **Knowledge Graph**: new parallel processes to provision data to Named Graphs datasets in the Triples Store
* **Knowledge Graph**: a new Triples Store migration that creates transformed version of all the data in the new Named Graphs dataset

Bug fixes
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* **Knowledge Graph**: Jena upgraded to 4.6.1 to address an issue that in certain circumstance makes Jena unresponsive
* **Sessions**: various bug fixes and improvements

Individual components
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This release brings improvements and bug fixes to renku-ui and renku-notebooks.

Features
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* **UI**: reduce unnecessary 'project locked' notifications (`1982 <https://github.com/SwissDataScienceCenter/renku-ui/issues/1982>`_, `#2025 <https://github.com/SwissDataScienceCenter/renku-ui/issues/2025>`_)
* **UI**: expose project metadata as JSON-LD (`1867 <https://github.com/SwissDataScienceCenter/renku-ui/issues/1867>`_, `#2022 <https://github.com/SwissDataScienceCenter/renku-ui/issues/2022>`_)


Individual components
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Fixes a bug in the Graph preventing the provisioning process to hang for projects using template in a certain state.

Features
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* **Knowledge Graph**: ``visibility`` property added to the response of the Dataset Details API (`1085 <https://github.com/SwissDataScienceCenter/renku-graph/issues/1085>`_)

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Fixes a bug in the UI with anonymous sessions that was caught after tagging 0.17.0,
but before deploying that version.

Features
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* **UI** New styling of project and datasets (`1984 <https://github.com/SwissDataScienceCenter/renku-ui/issues/1984>`_, `#2001 <https://github.com/SwissDataScienceCenter/renku-ui/issues/2001>`_, `#1964 <https://github.com/SwissDataScienceCenter/renku-ui/issues/1964>`_, `#1978 <https://github.com/SwissDataScienceCenter/renku-ui/issues/1978>`_, `#2005 <https://github.com/SwissDataScienceCenter/renku-ui/issues/2005>`_)
* **UI** New full-screen session view (`1988 <https://github.com/SwissDataScienceCenter/renku-ui/issues/1988>`_, `#2009 <https://github.com/SwissDataScienceCenter/renku-ui/issues/2009>`_)

Bug fixes
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* **Sessions** allow usernames starting with numbers/symbols (`1213 <https://github.com/SwissDataScienceCenter/renku-notebooks/pull/1213>`_)

Individual components
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