Unicode strings upset the timestamp context manager

[ianozsvald]

Using a unicode string inside a timestamp context manager:
with profile.timestamp(u"Adding_jobs"):
causes:
TypeError: __name__ must be set to a string object

This can be caused with a normal looking Python string if you use from __future__ import unicode_literals (as I originally did) and the error message isn't as informative as it could be. The solution, if using the __future__ import is to force a binary sequence:
with profile.timestamp(b"Adding_jobs"):

I mention this more just to help others spot the problem if they hit this error message.

[fabianp]

Thanks @ianozsvald ! Do you think it would be possible to allow unicode strings inside a timestamp context manager ? (if not, maybe a check in the TimeStamper.timestamp would be nice)