It is good practice to use the "with" keyword when dealing with file objects. This has the advantage that the file is properly closed after its suite finishes, even if an exception is raised on the way. It is also much shorter than writing equivalent try-finally blocks
1. Timer module for timing things. Should've done this a while ago.
2. WPA handshake attack outputs # of clients, lists all clients, has countdown
3. WPA Handshake Attack deauths all clients at the same time.
4. Fixed bug where WPA handshake attack never timed out. Fixes#23
5. WPA Cracking via aircrack-ng shows percentage & ETA.
6. Mild refactoring / cleanup of AttackWPA module.
Aireplay can optionally NOT store the process output (via `devnull=False`).
By-default, Aireplay attacks will not capture aireplay-ng output, to
avoid deadlock when overloading the OS buffer (see #21).
Deauth now deauths clients (whoops).
Checks all handshakes if no filename is given to --check-hs
Times out a --pixie attack if the step does not change in 30 seconds.
