Features

• Add many new components (#11 #4).
• Represent music with data frames.
• Refactor code. Now it's more developer-friendly.
• Reduce package dependencies.

Breaking Changes

• Deprecate argument tie of Line(). Use Tie() instead.
• Deprecate argument unit of Tempo(). Use marking instead.
• Change arguments of export().
• Remove tuplet() and Tupler(). Use argument durations of Line() instead.

• Recognize Shiny apps.

• Change default score margin to 0.
• Add "MuseScore Command Line Options" in vignette("gm").
• Improve show() and export() to accept MuseScore command line options (#10).

• Fix bug of not showing scores when knit to PDF or Word (#9).
• Make filling rest notes after Lines invisible.
• Add short introduction in Chinese.
• Add "Comparison" section in vignette("gm").

• Improve Line() to accept non-logical NA as pitch.
• Improve error message for pitches in Line().
• Fix bug of incorrect default MuseScore path for Windows (#1).
• Fix bug in error message for durations in Line().
• Add acknowledgement.