This is not included by default in most builds, and isn't necessary for
this module anyway.
Also fix the local variable shadowing the traceback module in _capture_exc.
Added test for both (works on CPython and MicroPython).
Version bump to 0.10.2.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
In order to make this more suitable for non-unix ports, the discovery
functionality is moved to a separate 'extension' module which can be
optionally installed.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>