Small logger issue

[TomWagg]

Hey @moeyensj 🙂 It looks like there's maybe a small issue with the logger when generating ephemerides times out?

For reference I am currently using v1.1 of Thor. Here's the most relevant part of the traceback and I'll copy the whole thing below.

File "/astro/users/tomwagg/.conda/envs/neocp/lib/python3.9/site-packages/thor/backend/backend.py", line 61, in ephemeris_worker
    logger.CRITICAL("Ephemeris generation timed out on orbit IDs (showing first 5): {}".format(orbits.ids[:5]))
AttributeError: 'Logger' object has no attribute 'CRITICAL'

Let me know if you need more info. Whole trackback below

---------------------------------------------------------------------------
RemoteTraceback                           Traceback (most recent call last)
RemoteTraceback: 
"""
Traceback (most recent call last):
  File "/astro/users/tomwagg/.conda/envs/neocp/lib/python3.9/site-packages/thor/backend/backend.py", line 59, in ephemeris_worker
    ephemeris = backend._generateEphemeris(orbits, observers)
  File "/astro/users/tomwagg/.conda/envs/neocp/lib/python3.9/site-packages/thor/backend/pyoorb.py", line 463, in _generateEphemeris
    ephemeris, err = oo.pyoorb.oorb_ephemeris_full(
  File "/astro/users/tomwagg/.conda/envs/neocp/lib/python3.9/site-packages/thor/backend/backend.py", line 32, in handle_timeout
    raise TimeoutError(self.error_message)
TimeoutError: Timeout

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/astro/users/tomwagg/.conda/envs/neocp/lib/python3.9/multiprocessing/pool.py", line 125, in worker
    result = (True, func(*args, **kwds))
  File "/astro/users/tomwagg/.conda/envs/neocp/lib/python3.9/multiprocessing/pool.py", line 51, in starmapstar
    return list(itertools.starmap(args[0], args[1]))
  File "/astro/users/tomwagg/.conda/envs/neocp/lib/python3.9/site-packages/thor/backend/backend.py", line 61, in ephemeris_worker
    logger.CRITICAL("Ephemeris generation timed out on orbit IDs (showing first 5): {}".format(orbits.ids[:5]))
AttributeError: 'Logger' object has no attribute 'CRITICAL'
"""