Merge branch 'master' of https://github.com/patiences/scrapy into patiences-master

.travis.yml

@@ -23,6 +23,8 @@ matrix:
       env: TOXENV=py36
     - python: 3.6
       env: TOXENV=docs
+    - python: 3.7-dev
+      env: TOXENV=py37
 install:
   - |
       if [ "$TOXENV" = "pypy" ]; then

requirements-py3.txt

-Twisted >= 17.9.0
+git+https://github.com/lopuhin/twisted.git@9384-remove-async-param
 lxml>=3.2.4
 pyOpenSSL>=0.13.1
 cssselect>=0.9

tox.ini

@@ -81,6 +81,10 @@ deps = {[testenv:py34]deps}
 basepython = python3.6
 deps = {[testenv:py34]deps}
 
+[testenv:py37]
+basepython = python3.7
+deps = {[testenv:py34]deps}
+
 [testenv:pypy3]
 basepython = pypy3
 deps = {[testenv:py34]deps}