getWalletTransferId: change in return value

Get Transfer: return real object, not a map (#10)

* Get Transfer: return real object, not a map

* change return value to Optional<Transfer>

* remove commented code

List transfer optional params

Merge pull request #9 from bitsoex/list_transfer_optional_params

Add optional params for list transfers api

Fix log

Avoid sensitive info in logs

Improve support for numbers

Make validations for fees optional parameters more accessible instead of just BigDecimals.

Improve support for numbers

Make validations for fees optional parameters more accessible instead of just BigDecimals.

Update function of java

Downgrade a function of newer java version.

Modify SendMany call to adjust parameters

• Parameters in sendMany are now divided, required ones are explicit while optional ones are inside a Map of several properties.
• Added validation for required parameters to return exception if null
• Added validation for known optional parameters to return exception if misformed (different type or flag inserted but null value)
• Added support for receiving unknown parameters in the optional map, if receiving a parameter not stated in our documentation it will be added to the transaction and sent to BitGo, documentation for all parameters in: https://test.bitgo.com/api/v2/#operation/express.wallet.sendmany

Add wallet lookup by address

Added support in v2 for looking up a wallet by its address.

Add retry for HTTP 5xx errors on v2 list wallet transfers

Merge pull request #4 from bitsoex/v2retry500

Add retry for HTTP 5xx errors on v2 list wallet transfers

v1 updates

-listWalletTransactions - add the optional arguments of minHeight, maxHeight, minConfirms
-retry on 5xx errors