[DH] Fix for time signature setting from scoreDef
Annotations (including performance directions) should not be italic; they are in roman script above the staff. Expressions, on the other hand, are indeed italic and are placed below the staff. I've added the new style to distinguish between the two.
added test and fixed missing update of scoreDef object
another test for staffInfo behaviour
Slicing staffInfo parameters only effect first scoreDef
Merge branch 'timesig' of https://github.com/zolaemil/MEItoVexFlow
Removed buggy repetition of same name…this branch should be good now
Merge branch 'annot-formatting'

* annot-formatting:
  Removed buggy repetition of same name…this branch should be good now