use asyncio.run

[dantownsend]

Related to #333

[codecov]

Codecov Report

Merging #334 (4c13422) into master (2845848) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #334   +/-   ##
=======================================
  Coverage   84.92%   84.92%           
=======================================
  Files          21       21           
  Lines        1844     1844           
  Branches      283      283           
=======================================
  Hits         1566     1566           
  Misses        236      236           
  Partials       42       42           

Impacted Files	Coverage Δ
ward/fixtures.py	96.58% <100.00%> (ø)
ward/testing.py	96.51% <100.00%> (ø)

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[darrenburns]

Looks good to me, thank you!