preview

Features

• 26dbf07 feat(preview): add JSON tree previews and source navigation (@sebthom)

Dependency updates

• f1c93f4 fix(deps): bump net.sourceforge.plantuml:plantuml-mit (#57) (@dependabot[bot])
• d359430 fix(deps): bump com.vegardit.maven:vegardit-maven-parent (#56) (@dependabot[bot])

Other changes

• 7384550 chore: upgrade to no-npe 2.0.1 external null annotations (@sebthom)