Minor fixes

v0.5.2

Fix test_oneshot_on_usr2_error to reset the buffer before doing the s…

Bugfix

• fixed issue in cleaning after closing manhole connection

Python 3 support !

• Python 3.2, 3.3 and PyPy support !
• Fixed a bug with closing the connection socket (it was causing crashes in some rare scenarios)
• Created a test matrix in Travis

First release

v0.4.0

Add tests and up version for oneshot_on option.