Highlight top-level definitions even in the presence of newlines between
the definition and the information that follows it.
Highlight with 0 or more occurrences.
Merge pull request #160 from Fuuzetsu/typehighlight

Highlight top-level declarations even if newlines are present.
Update NEWS
Rename `ghc-core-options` to `ghc-core-program-args` and improve docstring

This is a follow-up to 8b3db50