Merge pull request #118 from pydanny/pyup-update-twine-1.11.0-to-1.12.1

Update twine to 1.12.1

diff --cc requirements.txt
index 23683d0a534dab24cbc5e5c5c3df31d829782bf6,1da4034360887dac3904b3b85dd6fcbcc9f033b5..ec5610e3536a029df2e857934ca29a125eb12c76
--- 1/requirements.txt
--- 2/requirements.txt
+++ b/requirements.txt
@@@ -1,7 -1,7 +1,7 @@@
  # Testing and deployment packages.
  coverage==4.4.2
 -pytest==3.7.4
 +pytest==3.8.1
  pytest-cov==2.6.0
  freezegun==0.3.10
- twine==1.11.0
+ twine==1.12.1
  wheel==0.31.1