Always record usable range for --edge installs
Always record usable range for --edge installs

Avoids cases where `jspm update` after an edge install will be broken
without also receiving `--edge`.

matthewbauer/jspm-cli,wichert/jspm-cli,buddhike/jspm-cli,desbo/jspm-cli,synaptek/jspm-cli,Rush/jspm-cli,pniederlag/jspm-cli,pniederlag/jspm-cli,desbo/jspm-cli,jackfranklin/jspm-cli,desbo/jspm-cli,peteruithoven/jspm-cli,Y--/jspm-cli,matthewbauer/jspm-cli,hmps/jspm-cli,whitneyit/jspm-cli,nfl/jspm-cli,nianwang/jspm-cli,watilde/jspm-cli,matoilic/jspm-cli,matthewbauer/jspm-cli,cgvarela/jspm-cli,hmps/jspm-cli,Y--/jspm-cli,synaptek/jspm-cli,peteruithoven/jspm-cli,jackfranklin/jspm-cli,wichert/jspm-cli,matoilic/jspm-cli,jspm/jspm-cli,cgvarela/jspm-cli,chenzhenxi/jspm-cli,matoilic/jspm-cli,watilde/jspm-cli,whitneyit/jspm-cli,nfl/jspm-cli,nianwang/jspm-cli,whitneyit/jspm-cli,apiv/jspm-cli,watilde/jspm-cli,buddhike/jspm-cli,buddhike/jspm-cli,apiv/jspm-cli,pniederlag/jspm-cli,apiv/jspm-cli,Rush/jspm-cli,hmps/jspm-cli,Y--/jspm-cli,chenzhenxi/jspm-cli,nianwang/jspm-cli,peteruithoven/jspm-cli,jackfranklin/jspm-cli,chenzhenxi/jspm-cli,jspm/jspm-cli,cgvarela/jspm-cli,nfl/jspm-cli,jspm/jspm-cli,wichert/jspm-cli,Rush/jspm-cli,synaptek/jspm-cli