Added typings to dev dependencies. #2
Added typings to dev dependencies. #2

Signed-off-by: Sebastian Haas <db043b2055cb3a47b2eb0b5aebf4e114a8c24a5a@haas.tech>

opensheetmusicdisplay/opensheetmusicdisplay,opensheetmusicdisplay/opensheetmusicdisplay,opensheetmusicdisplay/opensheetmusicdisplay