cql3: Make restriction::bounds() return a vector of optionals
cql3: Make restriction::bounds() return a vector of optionals

acbellini/scylla,phonkee/scylla,avikivity/scylla,rentongzhang/scylla,tempbottle/scylla,asias/scylla,guiquanz/scylla,shaunstanislaus/scylla,stamhe/scylla,scylladb/scylla,aruanruan/scylla,bowlofstew/scylla,rluta/scylla,scylladb/scylla,kangkot/scylla,senseb/scylla,linearregression/scylla,raphaelsc/scylla,aruanruan/scylla,avikivity/scylla,guiquanz/scylla,phonkee/scylla,duarten/scylla,wildinto/scylla,raphaelsc/scylla,stamhe/scylla,guiquanz/scylla,tempbottle/scylla,eklitzke/scylla,capturePointer/scylla,kangkot/scylla,acbellini/scylla,rluta/scylla,scylladb/scylla,kjniemi/scylla,victorbriz/scylla,asias/scylla,tempbottle/scylla,rentongzhang/scylla,bowlofstew/scylla,victorbriz/scylla,rentongzhang/scylla,avikivity/scylla,senseb/scylla,asias/scylla,shaunstanislaus/scylla,aruanruan/scylla,scylladb/scylla,bowlofstew/scylla,wildinto/scylla,eklitzke/scylla,gwicke/scylla,kjniemi/scylla,linearregression/scylla,kjniemi/scylla,justintung/scylla,capturePointer/scylla,senseb/scylla,glommer/scylla,kangkot/scylla,phonkee/scylla,linearregression/scylla,glommer/scylla,stamhe/scylla,gwicke/scylla,acbellini/scylla,eklitzke/scylla,respu/scylla,justintung/scylla,dwdm/scylla,duarten/scylla,dwdm/scylla,shaunstanislaus/scylla,dwdm/scylla,respu/scylla,victorbriz/scylla,raphaelsc/scylla,respu/scylla,capturePointer/scylla,wildinto/scylla,justintung/scylla,rluta/scylla,glommer/scylla,gwicke/scylla,duarten/scylla