Removed hcentering and vcentering options, since they are not supported by all versions of geometry.
Removed hcentering and vcentering options, since they are not supported
by all versions of geometry.

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle