user_db: increase the upperbound of density to 10000, to keep candidates topmost.
user_db: increase the upperbound of density to 10000, to keep candidates topmost.

rime/librime,bygloam/librime,j717273419/librime,kionz/librime,rime/librime,j717273419/librime,jakwings/librime,rime/librime,Prcuvu/librime,kionz/librime,Prcuvu/librime,rwduzhao/librime,jakwings/librime,jakwings/librime,rwduzhao/librime,bygloam/librime,Prcuvu/librime,j717273419/librime,rwduzhao/librime,bygloam/librime,kionz/librime,Prcuvu/librime,Prcuvu/librime,kionz/librime,rime/librime