Merge pull request #60 from pydanny/pyup-update-coverage-4.1-to-4.4.1

Update coverage to 4.4.1

diff --cc requirements.txt
index 69c8254ed78b9fac0ff34511c84bb3e1145f8c85,48625eaf10eea885f9c456a7efadef821aa6b685..ca7236ba69e18d625fd1be736b6fd5a2fe691f05
--- 1/requirements.txt
--- 2/requirements.txt
+++ b/requirements.txt
@@@ -1,6 -1,6 +1,6 @@@
  # Testing and deployment packages.
- coverage==4.1
+ coverage==4.4.1
  pytest==2.9.2
  pytest-cov==2.4.0
 -freezegun==0.3.7
 +freezegun==0.3.9
  wheel==0.29.0