Merge branch 'patch-picard_dependency_list' into 'develop'

Patch picard dependency list

This pull request deals with a recent change in pulling Picard's version number. Previously, the version number is generated only when the JAR is packaged. This means if we do `mvn test` or run tests on specific classes directly, we'll get `NullPointerException` since the dependency list is not created yet.

To fix this, the pulled dependency list stream is wrapped properly in an `Option` class now (so we can run tests directly on classes).

See merge request !180