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//////////////////////////////////////////
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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//////////////////////////////////////////
= Version Scheme
== The Groovy Version Scheme
=== Since Groovy 2.0.0:
Since Groovy 2.0.0 we follow the scheme as described in http://semver.org. This means the next minor version after 2.0.0 is 2.1.0, the first bugfix version after 2.0.0 is 2.0.1 and the next major version will be 3.0.0.
=== Before Groovy 2.0.0:
Before Groovy 2.0.0 we followed a version scheme where we have X.Y.Z, where X.Y is the major version, and Z the minor version. Bugfix versions where not really done, you had to upgrade to the next minor version for that. Since Groovy 1.0 we incremented only the Y for a new major version. The increment of X we wanted to leave for a very big breaking change, like a new MOP. The last major version in these scheme is 1.8(.0), 1.8.1 is the first minor and bugfix version. The major versions in the past using this scheme are: 1.8, 1.7, 1.6, 1.5, 1.0. Each of them having around 10 minor/bugfix versions.
=== Official Major Version:
The official major version is the current major version that should/can be used by the developers if they are not bound to a specific major version.
=== Maintenance Release Branch:
Here we indicate a former major version's bugfix release.
=== How long is a major version maintained?
That depends on the users. Let's say we have X in maintenance and Y is the official major version, then if a new major version Z is released, Y goes into maintenance. Usually we make one or two more bugfix releases for X and then we discontinue it, unless there are strong requests to have certain things fixed for users that can absolutely not upgrade.
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