Upgrade log4j version

Upgrade log4j version

Fixes GradleUp#668.

Remove gradle-publish-plugin from plugins dependencies.
Update a number of other dependencies.

publish: configure gradle publishing artifact per workaround.

chore: update js deps

prepare for 6.0.0 release

Release v5.2.0

update changelog

changelog for 5.0.0

(fix) Site links to edit doc pages. Closes GradleUp#432.