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- Added an initial maintainer guide with release instructions and trying if this can be published via Jenkins

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- Add maintainer one-time-setup page
- Try having the CSS file separate instead of inlining it

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- Formatting

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- Disable publishing HTML again because we do it via a separate Jenkins job now

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* main: (23 commits)
  [NO JIRA] Set version to 3.4.0-SNAPSHOT
  [NO JIRA] Set version to 3.4.0-SNAPSHOT
  [UIMA-6440] Stage release artifacts as part of the build
  [UIMA-6440] Stage release artifacts as part of the build
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release uimaj-3.3.0
  [NO-JIRA] Add license header to script.
  [NO-JIRA] Added a little release helper script
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release uimaj-3.3.0
  [UIMA-6374] Create CAS (de)serialization test suite
  [UIMA-6395] Apache UIMA Java SDK 3.3.0 release
  [UIMA-6395] Apache UIMA Java SDK 3.3.0 release
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release uimaj-3.3.0
  [UIMA-6395] Apache UIMA Java SDK 3.3.0 release
  [maven-release-plugin] rollback the release of uimaj-3.3.0
  [maven-release-plugin] prepare release uimaj-3.3.0
  [UIMA-6395] Apache UIMA Java SDK 3.3.0 release
  [UIMA-6395] Apache UIMA Java SDK 3.3.0 release
  ...

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- Add section on project structure

…ntation-from-website-into-maintainer-guide

* main:
  [UIMA-6454] Update dependencies (UIMA Java SDK 3.3.1)

…ntation-from-website-into-maintainer-guide

…r guide

* Add documentation for auto-staging and generating Jira change reports
* Add information how to avoid having to update the `jiraVersion` property of every release and deprecate the step in the checklist

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* Deprecate outdated release steps e.g. related to the old way of doing Eclipse update sites

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* Provide tips on signature and hash validation
* Provide tips on additional release quality checking

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* Additional explanations on signature and checksum checking

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* Nicer links

…ntation-from-website-into-maintainer-guide

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* Update command for signature validation
* Remove stage-release-artifacts.sh which has been superseded by the auto-staging mechanism

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* Update commands for checksum validation

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* Add note that credentials are required for auto-staging

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* Improve commands for checking signatures and hashes
* Use svn export instead of svn checkout to avoid having a `.svn` folder which is annoying for auto-checking signatures and hashes

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* Add section on Maven toolchains

…ntation-from-website-into-maintainer-guide

* main:
  [UIMA-6462] Avoid deploy broken checksum files for p2content.xml and artifacts.xml in feature modules

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* Fix module version

…ntation-from-website-into-maintainer-guide

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* Missing license header