[!!!][FEATURE] Make ignoreTags configuration more flexible
This change makes the ``TYPO3.Flow.reflection.ignoreTags`` setting a dictionary
to allow for adding and changing tag ignore behavior from 3rd party packages.
The previous syntax::
ignoredTags: ['tag1', 'tag2']
is now deprecated in favor of::
The old syntax is still evaluated so this change is mostly backwards compatible.
However it changes the behavior so that configuration is now merged rather than
replaced. So this is a breaking change if a package relied on this behavior. To
remove a tag from the list of ignored tags, it has to be set to ``FALSE``