docs: Improve and update of contributions documentation.

CONTRIBUTING.md

@@ -4,7 +4,7 @@ Thank you for your interest in contributing to PowerAPI! There are multiple ways
 
 # Ways to contribute
 
-We actively welcome any kind of contributions! Whether this contribution is: 
+We actively welcome any kind of contributions! Whether this contribution is:
 
 - Bug report
 - Documentation writing
@@ -14,27 +14,36 @@ We actively welcome any kind of contributions! Whether this contribution is:
 - Fix for an existing issue
 - ...
 
-Feel free to propose your contribution! 
+Feel free to propose your contribution!
 
 # Licensing
 
 All contributions should be under the same [BSD 3](https://choosealicense.com/licenses/bsd-3-clause/) licence that covers the project.
 
 # Contribution workflow
 
-We use pull requests to manage any change to the codebase. Please try to make your pull request as "atomic" as possible (related to one issue).
+We use pull requests to manage any change to the codebase. Please try to make your pull request as "atomic" as possible (related to one issue/feature).
 If you want to contribute to several issues or propose several distinct contributions, please create several pull requests to ease the review process.
-If you want to propose a codebase modification, you should:
-
-1. Fork the repository and create your branch from the pre-release branch
-2. Write new tests if your modifications are not covered by existing tests and should be tested. In particular, if your contribution is a bug fix that have not been detected by existing tests,
-add a test to ensure that this issue will not reappear later.
-3. If you've modified the API or made any structural change in the architecture, update the documentation
-4. Ensure that tests passes and your code lint (using pylint and flake8)
-5. Issue a pull requests on the pre-release branch. This way your modifications will be included in the next stable release (available on master).
-
-Each pull request have to be reviewed before beeing accepted. Some modifications can be
-asked by the projet's maintainers.
+If you want to propose a codebase modification, you have to:
+
+1. Create a GitHub issue related to your issue/feature
+2. Fork the repository and create your branch from the `master` branch. Your branch have to follow the convention: `<category>/<issue>/<description-kebab-case>`. Eg. `feature/issue10/support-influxdb-2`. Some categories are `feature` and `fix`.  
+3. Write new tests if your modifications are not covered by existing tests and have to be tested. In particular, if your contribution is a bug fix that have not been detected by existing tests, add a test to ensure that this issue will not reappear later.
+4. If you've modified the API or made any structural change in the architecture, update the documentation. Please notice that this kind of contribution will require the approval of Sponsors.
+5. Ensure that your code lint (using `pylint`, `flake8`, and `CodeQL`) and tests passes.  
+6. Issue a pull requests on the `master` branch. This way your modifications will be included in the next stable release.
+
+Please notice that each **pull request have to be reviewed** before beeing accepted. **Some modifications can be asked by the projet's maintainers**.
+Commits' messages have to use [Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0/#summary). Below we provide the list of messages types used for generating the release report:
+- `fix`
+- `perf`
+- `refactor`
+- `style`
+- `docs`
+- `test`
+- `build`
+- `ci`
+- `chore`
 
 ## Bug report
 
@@ -43,7 +52,7 @@ You are welcome to submit an issue. This issue should describe the bug and it co
 small test or a code snippet that reproduce the issue.
 
 Great, easy to understand, bug reports often include:
-- A quick summary of the issue 
+- A quick summary of the issue
 - What was expected and what happened
 - Step to reproduce
 - Details on your execution environment:
@@ -62,10 +71,11 @@ Please submit one pull request for each bug fix.
 
 # PowerAPI codebase
 
-## Coding style
+## Coding style and Quality
 
 We use `pylint` and `flake8` as linter to enforce rules on the coding style. Please validate your contributions using those tools to ease the validation process.
+We also use `CodeQL` to detect  bugs and security problems.
 
 ## Testing
 
-We use `pytest` to test that PowerAPI works as expected and to avoid regressions. Feel free to add new tests to improve code coverage!
+We use `pytest-cov` to test that PowerAPI works as expected and to avoid regressions. Feel free to add new tests to improve code coverage!