Logger with line number and file name information

[jnoortheen]

It will be very much easier to optimize the query, if the logged information is able to print the line and filename information. currently the logging format looks like this

[WARNING 2018-01-09 17:52:22,653] notifiers 14381 Potential unnecessary eager load detected on `app.model`

with this it is not easier to find the origin of the problem.

[leorochael]

It should be possible to implement this with some variant of

import traceback
traceback.print_stack()

Or some other function from the traceback module.