trio.run_sync_in_worker_thread is deprecated

[mehaase]

app_1 | /starbelly/starbelly/extractor.py:81: TrioDeprecationWarning: trio.run_sync_in_worker_thread is deprecated since Trio 0.12.0; use trio.to_thread.run_sync instead (python-trio/trio#810)

[mehaase]

A whole bunch of warnings while running tests:

/home/mhaase/.cache/pypoetry/virtualenvs/starbelly-T_MFzqrn-py3.7/lib/python3.7/site-packages/trio_asyncio/_base.py:20
  /home/mhaase/.cache/pypoetry/virtualenvs/starbelly-T_MFzqrn-py3.7/lib/python3.7/site-packages/trio_asyncio/_base.py:20: TrioDeprecationWarning: trio.hazmat is deprecated since Trio 0.15.0; use trio.lowlevel instead (https://github.com/python-trio/trio/issues/476)
    from trio.hazmat import wait_for_child

/home/mhaase/.cache/pypoetry/virtualenvs/starbelly-T_MFzqrn-py3.7/lib/python3.7/site-packages/rethinkdb/net.py:21
  /home/mhaase/.cache/pypoetry/virtualenvs/starbelly-T_MFzqrn-py3.7/lib/python3.7/site-packages/rethinkdb/net.py:21: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses
    import imp

tests/test_downloader.py::test_http_get
tests/test_downloader.py::test_http_proxy_get
  /home/mhaase/code/hyperiongray/starbelly/starbelly/downloader.py:264: DeprecationWarning: verify_ssl is deprecated, use ssl=False instead
    session_args['connector'] = aiohttp.TCPConnector(verify_ssl=False)

tests/test_downloader.py::test_socks_proxy_get
  /home/mhaase/.cache/pypoetry/virtualenvs/starbelly-T_MFzqrn-py3.7/lib/python3.7/site-packages/aiohttp_socks/connector.py:76: DeprecationWarning: SocksConnector is deprecated. Use ProxyConnector instead.
    username=username, password=password, **kwargs)

tests/test_downloader.py::test_socks_proxy_get
  /home/mhaase/.cache/pypoetry/virtualenvs/starbelly-T_MFzqrn-py3.7/lib/python3.7/site-packages/aiohttp_socks/proxy/socks5_proxy.py:41: DeprecationWarning: Parameter family is deprecated and will be ignored.
    family=family

tests/test_extractor.py::test_crawl_extractor
  /home/mhaase/code/hyperiongray/starbelly/starbelly/extractor.py:81: TrioDeprecationWarning: trio.run_sync_in_worker_thread is deprecated since Trio 0.12.0; use trio.to_thread.run_sync instead (https://github.com/python-trio/trio/issues/810)
    extracted_urls = await trio.run_sync_in_worker_thread(

tests/test_login.py::test_login_form
tests/test_login.py::test_login_with_captcha
  /home/mhaase/code/hyperiongray/starbelly/starbelly/login.py:178: TrioDeprecationWarning: trio.run_sync_in_worker_thread is deprecated since Trio 0.12.0; use trio.to_thread.run_sync instead (https://github.com/python-trio/trio/issues/810)
    forms = await trio.run_sync_in_worker_thread(partial(

tests/test_login.py::test_login_form
  /home/mhaase/.cache/pypoetry/virtualenvs/starbelly-T_MFzqrn-py3.7/lib/python3.7/site-packages/sklearn/linear_model/_logistic.py:764: ConvergenceWarning: lbfgs failed to converge (status=1):
  STOP: TOTAL NO. of ITERATIONS REACHED LIMIT.
  
  Increase the number of iterations (max_iter) or scale the data as shown in:
      https://scikit-learn.org/stable/modules/preprocessing.html
  Please also refer to the documentation for alternative solver options:
      https://scikit-learn.org/stable/modules/linear_model.html#logistic-regression
    extra_warning_msg=_LOGISTIC_SOLVER_CONVERGENCE_MSG)

tests/test_storage.py::test_storage
  /home/mhaase/code/hyperiongray/starbelly/starbelly/storage.py:98: TrioDeprecationWarning: trio.run_sync_in_worker_thread is deprecated since Trio 0.12.0; use trio.to_thread.run_sync instead (https://github.com/python-trio/trio/issues/810)
    body = await trio.run_sync_in_worker_thread(functools.partial(