5.0.0

Closed issues:

• When I try to use the libary, I get: Kotlin: Module org.hildan.fxgson cannot be found in the module graph #21

Implemented enhancements:

• Add back support for Java 8 #31

Merged pull requests:

• Optional depends on javafx.graphics #29 (@Glavo)
• Add Java 8 support #28 (@Glavo)