checkpoint cryptonet
syncing - not validating fully yet, but syncing
Updates to support miner
Add miner
remove unused files
Can now add block zero
Remove BANT mostly
tidy up, correct block format in seeknbuild
start changing to serializable fields / structs
data struct stuff, add Bitcoin block structures
remove old hashtree
Need to define functions for each object - need to fix
rename / addBlock needs to return True
expected target fix and send blocks properly
rename gracht->grachten
Add ds stuff, decrease retarget period