Pacli

Changelog:

* bugfixes.

Changelog:

* output is now pretty-printed and colorized,
* new set of commands: `pacli config` to handle configuration options,
* `pacli card parse $deckid $cardid` will try to decode a card from raw transactio. Useful for debugging.
* `pacli deck issue_mode_combo` to help calculate `int` value of deck combos.
* `deck info` now shows deck P2TH address.
* bugfixes and polish.

Changelog:

* fixed `send` for card issuing,
* implemented `transaction::sendraw` for sending hexlified raw transactions.

Changelog:

* Windows keyring fixes.

Changelog:

* depend on latest backend libraries (pypeerassets, btcpy),
* some tweaks with imports.

Changelog:

* sync with latest changes in pypeerassets;
* implemented `coin` method, can send Peercoins to addresses and OP_RETURN transactions.