Bump up to Releases 1.5.1 and Sphinx 1.7.x

Author: bitprophet

.travis.yml

@@ -12,6 +12,7 @@ env:
   - SPHINX=">=1.4,<1.5"
   - SPHINX=">=1.5,<1.6"
   - SPHINX=">=1.6,<1.7"
+  - SPHINX=">=1.7,<1.8"
 install:
   # For some reason Travis' build envs have wildly different pip/setuptools
   # versions between minor Python versions, and this can cause many hilarious

dev-requirements.txt

@@ -1,8 +1,8 @@
-sphinx>=1.3,<1.7
+sphinx>=1.3,<1.8
 invoke>=1.0.0
 invocations>=1.2.0
 semantic_version>=2.4,<2.5
 wheel==0.24
 twine==1.11.0
-releases>=1.2.0,<2.0
+releases>=1.5.1,<2.0
 flake8==2.4.0