version 2.0
DGW version 2
added checkpoint at block 58888
added checks against time warp attacks
switch testnet to DGWv3 at block #10
switch mainnet to DGWv3 at block #100000
missing return

oh, what a mess it could have been if it wasn't spotted in time!
Merge pull request #10 from srcxxx/master

Version 2.0.5 (DGWv3 + security fixes)