Fixed UnboundLocalerror when no queued email
Fixed multiprocessing issue
Moved split emails into its own function
Deleted unnecessary tests, fixed bug on the split emails
Changed multiprocesses to uses_multiprocessing
Merge pull request #21 from SeiryuZ/fix-multiprocess-connection

Fix multiprocess connection
Updated README.
Bumped to 0.5.1.
Added logging
Handle exceptions on the send_queued_mail command
Changed log message
Modified more log messages and moved the init functions
modified exception to support python 3
Merge pull request #22 from SeiryuZ/logging-functionality

Added logging. Fixes #20
Minor cleanup and test fixes.
Added BATCH_SIZE settings to limit the number of emails sent in a batch.
Slightly tweaked logging message.
Updated README.
Failing test case for string priority issue, ref #23
Fix string priority representation, fixes #23