Galaxy-release-util

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* Update release issue template by jdavcs in https://github.com/galaxyproject/galaxy-release-util/pull/16
* Fix typos in release issue template by jdavcs in https://github.com/galaxyproject/galaxy-release-util/pull/18

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* Fix release script if multiple bug fixes subheadings in changelog by mvdbeek in https://github.com/galaxyproject/galaxy-release-util/pull/15

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* Add mypy to CI under python 3.8 by jdavcs in https://github.com/galaxyproject/galaxy-release-util/pull/11
* Misc. updates by jdavcs in https://github.com/galaxyproject/galaxy-release-util/pull/12
* Misc. updates to script generating the release publication issue by jdavcs in https://github.com/galaxyproject/galaxy-release-util/pull/13
* Fix link to docs on point releases by jdavcs in https://github.com/galaxyproject/galaxy-release-util/pull/14

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* Misc. updates to script by jdavcs in https://github.com/galaxyproject/galaxy-release-util/pull/9

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* Ignore commit without PR by mvdbeek in https://github.com/galaxyproject/galaxy-release-util/pull/4
* Rename sections: "new things" > "things" by jdavcs in https://github.com/galaxyproject/galaxy-release-util/pull/6
* Use semantic headings by jdavcs in https://github.com/galaxyproject/galaxy-release-util/pull/5
* Ignore empty lines, comments when reading in packages_by_dep_dag.txt file by jdavcs in https://github.com/galaxyproject/galaxy-release-util/pull/7
* Update release process template to current process by mvdbeek in https://github.com/galaxyproject/galaxy-release-util/pull/8

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* Bootstrap history fixes for regenerating existing docs

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