Be more lenient with time differences.
Merge branch 'master' of github.com:LuminosoInsight/luminoso-api-client-python
fix crash in upload script when transcoding and uploading
Merge branch 'master' into oauth
Add debug mode to client

Debug mode prints out a Python code approximation for every
call the client makes. It's not implemented using logging.DEBUG
because I have no idea how to turn on DEBUG logging specifically
for the client, in any sane way, without every single library
spewing its excessive debug info.