do not unbox single value if multiple mode
do not unbox single value if multiple mode

this is the odd special case referenced in #1014

remyyounes/dc.js,dc-js/dc.js,sojoasd/dc.js,vladimirbuskin/dc.js,liang42hao/dc.js,mcanthony/dc.js,ruhley/dc.js,mcanthony/dc.js,pastorenue/dc.js,pastorenue/dc.js,aaronhoffman/dc.js,gazal-k/dc.js,liang42hao/dc.js,dc-js/dc.js,aaronhoffman/dc.js,vladimirbuskin/dc.js,dc-js/dc.js,pastorenue/dc.js,mtraynham/dc.js,sojoasd/dc.js,vladimirbuskin/dc.js,dc-js/dc.js,liang42hao/dc.js,liang42hao/dc.js,remyyounes/dc.js,vladimirbuskin/dc.js,vladimirbuskin/dc.js,maackle/dc.js,sojoasd/dc.js,TheDataShed/dc.js,pastorenue/dc.js,TheDataShed/dc.js,mtraynham/dc.js,TheDataShed/dc.js,mtraynham/dc.js,dc-js/dc.js,TheDataShed/dc.js,remyyounes/dc.js,ruhley/dc.js,mcanthony/dc.js,ruhley/dc.js,gazal-k/dc.js,gazal-k/dc.js,maackle/dc.js,mcanthony/dc.js,aaronhoffman/dc.js,maackle/dc.js,maackle/dc.js,sojoasd/dc.js,aaronhoffman/dc.js,aaronhoffman/dc.js,maackle/dc.js,ruhley/dc.js,ruhley/dc.js,liang42hao/dc.js,gazal-k/dc.js,mtraynham/dc.js,remyyounes/dc.js,mtraynham/dc.js,remyyounes/dc.js,TheDataShed/dc.js,pastorenue/dc.js,sojoasd/dc.js,mcanthony/dc.js,gazal-k/dc.js