Contributing

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stable/3.0
Cement Developer Guide
Introduction
Cement is an open-source project, and is open to any and all contributions that other developers would like to provide. This document provides some guidelines that all contributors should be aware of, and abide by to have their submissions included in the source.
Licensing
The Cement source code is licensed under the BSD three-clause license and is approved by the Open Source Initiative. All contributed source code must be either the original work of the contributing author, which will be contributed under the BSD license, or work taken from another project that is released under a BSD-compatible license.
Submitting Bug Reports and Feature Requests
If you've found a bug, or would like to request a feature please create a detailed issue for it at github.com/datafolklabs/cement.
The ideal bug report would include:
Bug description
The version of Python, Cement, and any dependencies in use
Steps to reproduce the bug
Code samples that show the bug in action
A pull request including code that:
a. Fixes the bug
b. Atleast one test case that tests for the bug specifically
The ideal feature request would include:
Feature description
Example code, or pseudo code of how you might use the feature
Example command line session showing how the feature would be used by the end-user
A pull request including:
a. The feature you would like added
b. At least one test case that tests the feature and maintains 100% code coverage when tests are run (meaning that your tests should cover 100% of your contributed code)
c. Documentation that outlines how to use the feature
Guidelines for Code Contributions
If you are new to Cement, looking for something quick to fix, or just want an opportunity to contribute to the project, the best place to start is to review the issues labeled as low-hanging-fruit on Github.
All contributors should attempt to abide by the following:
Contributors fork the project on GitHub onto their own account
All changes should be commited, and pushed to their repository
All pull requests are from a topic branch, not an existing Cement branch
Contributors make every effort to comply with PEP8​
Before starting on a new feature, or bug fix, always do the following:
git pull --rebase to get latest changes from upstream
Checkout a new branch. For example:
git checkout -b feature/<feature_name>
git checkout -b bug/<bug_number>
Code must include the following:
All tests pass successfully
Coverage reports 100% code coverage when running tests
New features are documented in the appropriate section of the doc
Significant changes are mentioned in the ChangeLog
All contributions must be associated with at least one issue in GitHub. If the issue does not exist, create one (per the guidelines above).
Commit comments must include something like the following:
Resolves Issue #1127
Partially Resolves Issue #9873
A single commit per issue.
Contributors should add their full name or handle to the CONTRIBUTORS file.
Regarding git commit messages, please read the following:
​Commit Guidelines​
Source Code and Versioning
One of the primary goals of Cement is stability in the source code. For this reason we maintain a number of different git branches for focused development.
Development Branches
Active 'forward' development happens out of two branches:
master - Development for the next minor stable release.
portland - Development for the next major release.
Additionally, specific development branches might exist in the future for larger releases that may require iterative 'release candidate' handling before an official stable release. These branches will have the format of:
dev/3.1.x
dev/3.3.x
dev/4.1.x
dev/4.3.x
etc
Stable Branches
stable/0.8.x
stable/1.0.x
stable/1.2.x
stable/2.0.x
stable/2.2.x
stable/3.0.x
stable/3.2.x
etc
There is a system for versioning that may seem complex, and needs some explanation. Version numbers are broken up into three parts:
<Major>.<Minor>.<Bugfix>
This means:
Major - The major version of the source code generally relates to extensive incompatible changes, or entire code base rewrites. Applications built on the 1.x.x version of Cement will need to be completely rewritten for the 2.x.x versions of Cement.
Minor - The minor version signifies the addition of new features. It may also indicate minor incompatibilities with the previous stable version, but should be easily resolvable with minimal coding effort.
Bugfix - During the lifecycle of a stable release such as 2.2.x, the only updates should be bug and/or security related. At times, minor features may be introduced during a 'bugfix' release but that should not happen often.
It should be noted that both the Minor, and Bugfix versions follow a even == stable, and odd == development scheme. Therefore, the current version in git will always end in an 'odd number'. For example, if the current stable version is 2.0.18, then the version in stable/2.0.x would be 2.0.19. That said, the master branch might then be 2.1.1 which is the first version of the next minor release. Bugfixes would get applied to both branches, however feature updates would only be applied to master. The next stable release would then be 2.2.0 and a new git branch of stable/2.2.x will be created.
The portland branch is always very forward looking, and will contain significant (and likely broken) code changes. It should never be used for anything other than development and testing.
New Release Checklist
For maintainers before finalizing a release, create a Github issue called Cement X.YY.Z Release Tracker with the following:
1
- [ ] Git Tag
2
    - [ ] X
3
    - [ ] X.Y
4
    - [ ] X.Y.Z
5
- [ ] Git Merge to Version Branch
6
    - stable/X.Y
7
- [ ] 100% Test Passing on Travis CI
8
    - [ ] Python 3.5
9
    - [ ] Python 3.6
10
    - [ ] Python 3.7
11
- [ ] 100% Test Coverage
12
- [ ] API Documentation Builds (Read The Docs)
13
    - [ ] X.Y
14
- [ ] Developer Documentation (Gitbook)
15
    - [ ] stable/X.Y
16
    - [ ] Update Change Log and Release Notes
17
- [ ] Docker Image Builds (Docker Hub)
18
    - [ ] datafolklabs/cement:X
19
    - [ ] datafolklabs/cement:X.Y
20
    - [ ] datafolklabs/cement:X.Y.Z
21
- [ ]  PyPi Distribution
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Contents
Introduction
Licensing
Submitting Bug Reports and Feature Requests
Guidelines for Code Contributions
Source Code and Versioning
New Release Checklist