add: indexing of block numbers; requires rebuilding of databases
add: indexing of block numbers; requires rebuilding of databases

vaporry/pyethapp,kustomzone/pyethapp,ethereum/pyethapp,changwu-tw/pyethapp,danielnovy/test,RomanZacharia/pyethapp,gsalgado/pyethapp,heikoheiko/pyethapp,RomanZacharia/pyethapp,gsalgado/pyethapp,d-das/pyethapp,changwu-tw/pyethapp,ethereum/pyethapp