We should go through every key in main chain list to merget lists
as fast as possible. Previously we drop main chain traversing as
soon as we have no more new keys to add. Instead we should try
to go for old keys in the list and add it as more as we can.
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
Add sorting of passed public keys in `newAlphabetList`
function before Alphabet list merge to make returned
results more expected.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
