ultrasonic-app-subsonic-and.../CONTRIBUTING.md

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# Contributing
Ultrasonic development is a community project, and contributions are welcomed.
First, see if your issue havent been yet reported [here](https://github.com/ultrasonic/ultrasonic/issues),
then, please, first discuss the change you wish to make via [a new issue](https://github.com/ultrasonic/ultrasonic/issues/new).
## Contributing Translations
Interested in help to translate Ultrasonic? You can contribute in our
[Transifex team](https://www.transifex.com/ultrasonic/ultrasonic/).
## Contributing Code
By default Pull Request should be opened against **develop** branch, PR against **master** branch should be used only
for critical bugfixes.
### Here are a few guidelines you should follow before submitting:
1. **License Acceptance:** All contributions must be licensed as [GNU GPLv3](LICENSE) to be accepted.
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Use `git commit --signoff` to acknowledge this.
2. **No Breakage:** New features or changes to existing ones must not degrade the user experience.
3. **Coding standards:** best-practices should be followed, comment generously, and avoid "clever" algorithms.
Refactoring existing messes is great, but watch out for breakage.
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4. **No large PR:** Try to limit the scope of PR only to the related issue, so it will be easier to review
and test.
### Pull Request Process
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On each Pull Request Github runs a number of checks to make sure there are no problems.
#### Signed commits
Commits must be signed. [See here how to set it up](https://docs.github.com/en/authentication/managing-commit-signature-verification/signing-commits)
#### KtLint
This programm checks if the source code is formatted correctly.
You can run it yourself locally with
`./gradlew -Pqc ktlintFormat`
Running this command will fix common problems and will notify you of problems it couldn't fix automatically.
#### Detekt
Detekt is a static analyser. It helps to find potential bugs in our code.
You can run it yourself locally with
`./gradlew -Pqc detekt`
There is a "baseline" file, in which errors which have been in the code base before are noted.
Sometimes it is necessary to regenerate this file by running:
`./gradlew -Pqc detektBaseline`
#### Lint
Lint looks for general problems in the code or unused resources etc.
You can run it with
`./gradlew -Pqc lintRelease`
If there is a need to regenerate the baseline, remove `ultrasonic/lint-baseline.xml` and rerun the command.