Minimised requirements removing fluff

.gitignore

@@ -1,3 +1,5 @@
+.venv
+pip-selfcheck.json
 .errors
 2015*.txt
 2016*.txt

requirements.txt

@@ -1,13 +1,8 @@
-blessings==1.6
-bpython==0.14.2
-curtsies==0.1.19
-decorator==4.0.4
-greenlet==0.4.7
+decorator==4.0.5
 praw==3.3.0
-Pygments==2.0.2
-requests==2.8.0
+requests==2.8.1
 SimpleConfigParser==0.1.0
 six==1.10.0
-tornado==4.2
+tornado==4.3
 update-checker==0.11
 wheel==0.24.0