add dependency org.commonmark incl. extension for tables
use it for rendering
markdown variant is detected by inspecting the raw javadoc text, might be replaced by new API in DOM
minimal tests incl. examples from the specification in https://openjdk.org/jeps/467
Reverts eclipse-jdt/eclipse.jdt.ui#1585
add dependency org.commonmark incl. extension for tables use it for rendering markdown variant is detected by inspecting the raw javadoc text, might be replaced by new API in DOM minimal tests incl. examples from the specification in https://openjdk.org/jeps/467
fixes https://github.com/eclipse-jdt/eclipse.jdt.ui/issues/1472