IntelliJ use causes output directory warnings - Follow IntelliJ bug report

**Describe the bug**
Using or testing AndHow in IntelliJ creates warnings like this:
`Output path .../target/generated-test-sources/test-annotations intersects with a source root. Only files that were created by build will be cleaned.`

There is discussion of this issue here and I commented:
There is discussion of the IntelliJ issue here: https://youtrack.jetbrains.com/issue/IDEA-159676
I asked for help - Perhaps someone will reply.

**To Reproduce**
Just build or use the project in IntelliJ

**Expected behavior / Actual behavior**
No warnings.