Make protoc version 3.0 available through the plugin

[seh]

As previously mentioned in #1, please consider publishing a version of the Maven plugin that will use your protoc-jar version 3.0.0(-a3), so that we'll have the "proto3" syntax available.

It looks like it may be as "simple" as creating a new branch and changing a few dependency versions in the POM, as well as updating the documentation to mention the new version. But then there's also the matter of releasing the artifact.

Thanks for providing this plugin. It's proven to be easy to use.

[seh]

Related issue: os72/protoc-jar#2.

[os72]

Will have a look. Expect a new config parameter to control the protoc version since the new jar will contain all flavors now

[seh]

Fantastic. If there's anything you'd like me to try to help this along, please let me know. I was intending to figure out how you maintain your separate branches, and how they relate to what's on the master branch.

[os72]

Pushed 3.0.0-a3-SNAPSHOT, could you give it a try (clone, build, try)? It will run latest bundled protoc, unless you specify <protocVersion> under <configuration>

[seh]

I'm able to build and use the version 3 plugin without any problems. I didn't exercise trying to change the version used by the protoc compiler; using the latest version is my intention.

One suggestion for documentation: The generated code requires that the POM declare a compile-time dependency on the com.google.protobuf:protobuf-java artifact.

[os72]

Released 3.0.0-a3