Release of Version 2.0

This is the official release of MUSCIMA++ v2.0, which includes the following changes:

• A new schema to validate files
• A rebranding from CropObject to Node, to clarify it as Music Notation Graph (Node).
• An upgrade script to automatically convert existing v1.0 files into version 2.0 files.
• Removal of the MUSCIMA++ dataset without staff annotations (which was basically a copy, except for three types of annotations), which contradicts the single point of truth.
• Format changes to achieve:
  • better readability
  • consistent naming conventions
  • removal of unused classes that only clutter the code
  • renaming of classes with special characters
  • alignment of class-names with SMuFL as far as possible, See Issue #2 for more details.
  • alignment of the dataset with the DeepScores dataset.
  • better consistency by removing redundant information (id attribute from each node), which was just the dataset + document + node_id.

Initial release of MUSCIMA++

This was the original release by Jan Hajic.