floating fees
minor misc. tweaks
fixes from Sergio audit report
fix 'final_fee' referenced before assignment when unspent empty
Merge pull request #82 from JahPowerBit/develop

fix 'final_fee' referenced before assignment when unspent empty
misc. minor tweaks
improved private key CLI logic
standalone tx signing
do not assume counterpartyd has a last_message
silly errors
Merge branch 'develop' of https://github.com/PhantomPhreak/counterpartyd into develop
added `source` to btcpay, cancel API call params; redid cancel, btcpay logic; fixed and renamed unconfirmed inputs logic
minor bugs; tweak unlock logic
redo reorg. logic
replenish fee_required_remaining
shortened some error messages
redo reorg. logic again
replenish fee_required_remaining only with 297000
bug fixes and clarifications
fixed NoneType error with broadcasts