[Bitfinex] Added margin limits to margin info
Merge pull request #656 from zholmes1/develop

[Bitfinex] Added margin limits to margin info
Initial BitVC/Huobi commit
Formatting project
Remove logback from pom
Make source 1.6 compliant
Merge pull request #657 from jheusser/feautre_bitvc

BitVc/Huobi Implementation
Delete logback
Make wallet balance consistent with bitfinex in case of borrowing
Apply plaintext uri from default if not set
Remove unnecessary parsing for BitVcOrderBookTAS
Merge pull request #658 from jheusser/fixes_bitvc

Fixes bitvc
rescu version bump
Improve HitBTC

Added HitbtcException to handle error message responses

Fixed trade adapter for cases where the trade id is null

Amended digestParams to remove need for DatatypeConverter
Added DigestUtils with static method bytesToHex
[Vircurex] Removed DatatypeConverter

Class is not included in Android, using new method from DigestUtils.
[HitBTC] Moved bytesToHex to utils
Changed default trade id to null

HitBTC clientOrderID is generated depending if the trade id is null, so
clientOrderID was being sent as "".
[HitBTC] Improved error handling

Added to placeLimitOrderRaw
Format