bug caused by logger: not support binary rowKey!

HBase  RowKeys are bytearray,  So it support binary rowkeys. But when I use binary rowKey with this PyBase to put data to HBase,  there will be error occurred. This problem is triggered by  pybase/client.py Line 305
   logger.debug(
                   'Region cache miss! Table: %s, Key: %s', table, key)
   ...

   logger will crash when the key is binary here.

Waiting for bugfix version.