Release several minor issues

[jaguililla]

• Change requests' template updates
• Documentation update
• Kafka testing improvements
• Repositories' transactions

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For the Pull Request to be accepted please check:

• The PR has a meaningful title.
• If the PR refers to an issue, it should be referenced with the GitHub format (#ID).
• The PR is done to the develop branch (new features) or the master branch (releases).
• The code pass all PR checks.
• All public members are documented.
• The code follow the coding conventions stated at the contributing.md file.