Adapt project for Java 9 modules.

[Katsute]

Prerequisites

If all checks are not passed then the request will be closed.

• I have checked that no other similar feature request already exists.
• I have checked that this feature does not already exist.
• The feature request makes sense for the project.

Proposal

Describe the feature that should be added.

Adapt library to be compatible with Java 9 modules.

Reasoning

Explain why this feature should be added.

Java runtime images do not work with non-modular dependencies.