fix logger not rotating log files except on startup/shutdown

Signed-off-by: Thomas Stilwell <stilwellt@openlabs.co>
Merge pull request #835 from benemorius/fix-logfile-maxsize

fix logger not rotating log files except on startup/shutdown
Migrate to bitcoin from pybitcointools. Fix #552.

* Replace privtopub with privkey_to_pubkey.
Merge pull request #842 from Renelvon/bitcoin

Migrate from pybitcointools to bitcoin.
Silences unnecessary error log on shutdown.
Merge pull request #851 from gubatron/transport-shutdown-fix

Silences unnecessary error log on shutdown.
Sign then Encrypt
Convert to cryptor objects
Add GUID to CryptoPeerListener
Access data first element
Cleanup Fixes

- Convert old methods to Cryptor objects
- Remove old debugging statements that crept in somehow

Various fixes

- Remove compression
- Revert asserts
- Implement GUIDMixin specificity
- Remove dupe code
Remove unused zlib
_on_raw_message cleanup

Readjusted the organization of the method.

Fix on_order messup

Remove unused seed_contract_json

This was originally logged for convenience but it's unnecessary work.

Remove unused seed_contract