Merge pull request #2 from slimta/master

Importing new changes from master repository
Merge pull request #3 from slimta/master

use nicer markups in docstrings
Merge pull request #4 from slimta/master

Merge from original repository
Update client.py

Adding Timeout exception due errors on Gevent Timeout
Update client.py

Adjusting MSG error
Adding SmtpRelay error treatment in Timeout
Adding Timout exception on disconnect

An Timeout is occurring on disconnect, adding a pass treatment
Adjusting commit after Ian suggestions

Combined Exception with Timeout on _disconnect
removed transientrelayerror
Merging SmtpError with Timeout exception
Merge pull request #20 from rgcarrasqueira/master

Fixed some issues about Timeout exception