twilio-python 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. 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. Breaking changes that requires extensive reworking of code
will case the MAJOR version to be incremented by one, and the MINOR and
PATCH versions will be reset to zero. Twilio understands that this can be very
disruptive, so 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-python 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 bug fixes and security updates, but no new
features.