changes in txcons/txspec
p2ptrade update
Merge branch '68' of https://github.com/jimmysong/ngcccbase

Conflicts:
	wallet_controller.py
partially-signed transaction construction
p2ptrade update
getopt2argparse
p2ptrade update
Merge pull request #69 from fanatid/argparse

argparse instead getopt
p2ptrade: HTTP comm and command-line operations
p2ptrade: made agent self-sufficient
Issue #66: Add transaction history