Use latest BOMs

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Changed groupId to 'com.github.sebhoss.doxia'

It is easier to find all related artifacts this way.

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Don't deploy examples to central

Signed-off-by: Sebastian Hoß <mail@shoss.de>
[maven-release-plugin] prepare release doxia-module-wikitext-2.0.0