crest-maven-plugin: add java 11 support, upgrade ASM to >6

[stefan-lange]

We have a project with java 11, which uses th crest-maven-plugin.

This combination is not possible due to the old version of ASM. We get errors like this This feature requires ASM7.

It would be great, if the maven plugin could use a version of ASM > 6 with java 11 support, see https://asm.ow2.io/versions.html.

[jgallimore]

Would this PR work for you? #90? I should be able to push a snapshot for you to test with, if that helps.

[stefan-lange]

Thx, tested it locally. The PR has no effect on my problem.

The dependency in crest-maven-plugin/pom.xml is the problem. This should be upgraded.

    <dependency>
      <groupId>org.ow2.asm</groupId>
      <artifactId>asm</artifactId>
      <version>6.0_ALPHA</version>
    </dependency>

In combination with the ASM version in CrestCommandLoaderDescriptorGeneratorMojo. It is ASM6 at this moment. I don't know what side effects this will cause.

[jgallimore]

Thanks for the feedback. Could I get you to re-review now? I've bumped that up to ASM9 too.

[stefan-lange]

I've tested the crest-maven-plugin-0.16-SNAPSHOT on my machine. No more compile errors. Thank you, it looks great!

[stefan-lange]

When will this be released approx.? :)

[jgallimore]

I'll cut a release this afternoon, thanks for you feedback!

[AndyGee]

This is really nice of you Jon. Thank you so much for your time. You're a star!