merge(pyup): updates dependencies

* Update atomicwrites from 1.2.1 to 1.3.0

* Update more-itertools from 4.3.0 to 6.0.0

* Update pip from 18.1 to 19.0.3

* Update pluggy from 0.8.0 to 0.9.0

* Update py from 1.7.0 to 1.8.0

* Update pycodestyle from 2.4.0 to 2.5.0

* Update pytest from 4.0.1 to 4.3.0

* Update pytest-cov from 2.6.0 to 2.6.1

* Update setuptools from 40.6.2 to 40.8.0

* Update wheel from 0.32.2 to 0.33.1

* Update twine from 1.12.1 to 1.13.0

Author: pyup-bot

requirements.txt

@@ -1,5 +1,5 @@
 argh==0.26.2
-atomicwrites==1.2.1
+atomicwrites==1.3.0
 attrs==18.2.0
 certifi==2018.11.29
 chardet==3.0.4
@@ -10,22 +10,22 @@ colored==1.3.93
 coverage==4.5.2
 docopt==0.6.2
 idna==2.8
-more-itertools==4.3.0
+more-itertools==6.0.0
 pathlib==1.0.1
 pathtools==0.1.2
-pip==18.1
-pluggy==0.8.0
-py==1.7.0
-pycodestyle==2.4.0
-pytest==4.0.1
-pytest-cov==2.6.0
+pip==19.0.3
+pluggy==0.9.0
+py==1.8.0
+pycodestyle==2.5.0
+pytest==4.3.0
+pytest-cov==2.6.1
 pytest-watch==4.2.0
 pyyaml>=4.2b1
 requests==2.21.0
-setuptools==40.6.2
+setuptools==40.8.0
 six==1.12.0
 urllib3==1.24.1
 watchdog==0.9.0
-wheel==0.32.2
+wheel==0.33.1
 
-twine==1.12.1
+twine==1.13.0