Allow us to change the number of measures per system.

First let me say I came across this program last night. Absolutely awesome! Just love it. Thank you. Already purchase the iOS app help support this project.

Not sure if I'm using the word system correctly, but sometimes I would like to change the number of measures there are across one row of measures. Usually I like to have 4 measures, but sometimes I would like to be anle to specify 5 or 6 measures on special lines where the may be something like only a whole rest.

Thanks.