twilio-csharp uses a modified version of Semantic Versioning for all
changes to the helper library. It is strongly encouraged that you pin at least
the major version and potentially the minor version to avoid pulling in breaking
changes.
Semantic Versions take the form of MAJOR.MINOR.PATCH
When bugs are fixed in the library in a backwards compatible way, the PATCH
level will be incremented by one. When new features are added to the library
in a backwards compatible way, the PATCH level will be incremented by one.
PATCH changes should not break your code and are generally safe for upgrade.
When a new large feature set comes online or a small breaking change is
introduced, the MINOR version will be incremented by one and the PATCH
version reset to zero. MINOR changes may require some amount of manual code
change for upgrade, guidance will be provided in the Upgrade Guide.
These backwards-incompatible changes will generally be limited to a small number
of function signature changes.
The MAJOR version is used to indicate the family of technology represented by
the helper library. It increased from 4.x.x to 5.x.x when Twilio moved to
auto generation of helper libraries. Breaking changes that requires extensive
reworking of code (like the 4.x.x to 5.x.x upgrade) will cause the MAJOR
version to be incremented by one, the MINOR and PATCH versions will be reset
to zero. Twilio understands that this can be very disruptive, we will only
introduce this type of breaking change when absolutely necessary. New MAJOR
versions will be communicated in advance with Release Candidates and a
schedule.
Twilio maintains a comprehensive Changelog for every version that
is released. This will contain useful information every new version and what
bugs have been fixed, features added, and functionality enhanced. After 5.1.1
Twilio will maintain an Upgrade Guide for every change (MINOR or
MAJOR) that requires changes to your code. When upgrading between two
versions that have more than a PATCH level change, it's best practice to check
the Upgrade Guide and to make sure that all your tests and static
checks pass after upgrade.
twilio-csharp follows an evergreen model of support. New features and
functionality will only be added to the current version. The current version -
1 will continue to be supported with bugfixes and security updates, but no new
features.
Twilio frequently rolls out new features in public and private beta periods.
Twilio strives to ship early and often and bake customer feedback back into our
products. To support that mission, the twilio-csharp helper library has an
Edge version based of the alpha branch. This version is identified with an
alpha metadata tag on the version number.
The way the Edge artifact is created is by playing the Edge features on top
of our stable artifact. The Edge artifact will always have the same version
number as the stable artifact it was created from, but with an alpha suffix.
For example, 5.0.1-alpha1 is the 5.0.1 branch with Edge features included.
If there is a change to one of the Edge features we may regenerate the Edge
artifact and release a new 5.0.1-alpha2, new Edge artifacts simply increment
the number after the alpha suffix. All Edge features are considered
unstable and a backwards incompatible change in an Edge feature will not cause
any version change so you should take care when upgrading from one alpha
version to another.
Once an Edge feature has matured it will be considered Mainline and included
in the stable artifact, with a MAJOR or MINOR version bump.
To use an Edge artifact in your PHP project you will have to make sure that
you pin the artifact with alpha stability in your package.json.