Handle group with dots when installing maven artifacts

[jmini]

Fixes #164

After creating the PR, please add a commit that adds a bullet-point under the -SNAPSHOT section of CHANGES.md that includes:

• [x] a summary of the change
• [x] a link to the newly created PR

This makes it easier for the maintainers to quickly release your changes.

[nedtwigg]

Released in 3.36.1.