fixes #962 -- display warning when note value === 0
fixes #962 -- display warning when note value === 0

Hrishi1999/musicblocks,walterbender/musicblocks,Hrishi1999/musicblocks,walterbender/musicblocks,eohomegrownapps/musicblocks,eohomegrownapps/musicblocks,eohomegrownapps/musicblocks,walterbender/musicblocks,Hrishi1999/musicblocks