Plug: Make sure that the entry is in the owners
Fix PEP8 nitpick
Add entry in 'uptodate' at the end of transfer
Save the metadata at the end of the transfer
Referee: Add uptodate to the should_own

When files in A are synced with B and a new file is created in A,
the Referee was not adding A in the new owners. Now the files that
are currently up-to-date are added by default.
This could cause a problem if the rule just changed, we should do
some experiments.
Improve requirements_*.txt
Remove useless pip install in travis
Don't wait for Router and Dealer in test_changes. Fix #22.

We were waiting for rep1's router and dealer to start. This was
causing a timeout after 5s, so all the transfers had been emited
in less than 5s.
This is due to the fact that the router and the dealer only start
when all the changes have been emited.
Seek instead of appending in LC. Fix #20
Fix except clause for invalid JSON file.
Update drivers.rst

Fixed one more typo
Don't use the same session for the rules tests. Fix #36
Refactor multipass_copy
PEP8
Test should now pass
Wait for transfer started
upload_chunk and get_chunk now take metadata instead of filename

upload_chunk and get_chunk were getting the filename as first
argument. This is not wanted as a driver may request informations
from the metadata in those handlers.
Fix test_multipass_copy

The chunk size was set on the wrong driver (source instead of
target). The size of the transfer has been reduced to 100 bytes
instead of 100KB in order to have a much faster test.
Improve test_rules stability

A different was used each time, but the old files were not
deleted. Now the two reps are created before each test.
Use last version of Logbook instead of Onitu's fork