update wheel building script

Author: asottile

CONTRIBUTING.rst

@@ -55,11 +55,11 @@ Here's a brief check list for releasing a new version:
   but there's ``./bin/download-windows-wheels`` script that downloads built
   wheels.  Then upload them with ``twine``.
 - Run ``./bin/build-manylinux-wheels`` to build linux wheels and upload them to
-  PyPI (takes ~10 minutes).
+  PyPI (takes ~5 minutes).
 - The `docs website`__ also has to be updated.
   It's currently a static website deployed on GitHub Pages.
   Use ``python setup.py upload_doc`` command.
-  Although it seems possible to be automated using Travis.
+  Although it seems possible to be automated using Github Actions.
 - Manually create a release through https://github.com/sass/libsass-python/releases/
 
 Ping Hong Minhee (hongminhee@member.fsf.org, @dahlia on GitHub) if you need

bin/build-manylinux-wheels

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.5
+#!/usr/bin/env python3
 """Script for building 'manylinux' wheels for libsass.
 
 Run me after putting the source distribution on pypi.
@@ -21,12 +21,7 @@ def check_call(*cmd):
 
 def main():
     os.makedirs('dist', exist_ok=True)
-    for python in (
-            'cp27-cp27mu',
-            'cp35-cp35m',
-            'cp36-cp36m',
-            'cp37-cp37m',
-    ):
+    for python in ('cp27-cp27mu', 'cp36-cp36m'):
         with tempfile.TemporaryDirectory() as work:
             pip = '/opt/python/{}/bin/pip'.format(python)
             check_call(