grammar: negation of pronoun ("nicht alles ist schlecht")
grammar: coordination of PP and PAV
grammar: in passive sentences, s and subj are mutually exclusive (instead of s and obja)
grammar: more consistent treatment of imperative verbs
preprocessing: small tweak to verb clause recognition
grammar: adverbs modifying adverbial pronouns
grammar: coordination with 'aber': relax comma constraint
grammar: tweaks to relative and interrogative clauses