Fix truncation of exception traceback

[grechut]

Today we've realized that our API exception tracebacks are being truncated when we have flask-profiler turned on. After short research, we've discovered that the exception's stack trace is rewritten because of the way exception is re-rised.

except Exception as e:
    raise e

Instead of this approach, just blank raise can be used. It keeps the old traceback.

[muatik]

Perfect! Thanks for your contribution. I am going to test it and release a bug-fix version on pip.

[drbig]

We've tested it already, but there is no such thing as too much testing 👍 :D

[muatik]

@drbig :) 👍