Replace Python 3.8b/-dev with regular 3.8

Author: dmtucker

.travis.yml

@@ -6,7 +6,7 @@ python:
 - '3.5'
 - '3.6'
 - '3.7'
-- 3.8-dev
+- '3.8'
 install: pip install 'tox-travis ~= 0.12.0'
 script: tox
 deploy:

setup.py

@@ -34,8 +34,8 @@ def read(fname):
         'pytest>=2.8,<4.7; python_version<"3.5"',
         'pytest>=2.8; python_version>="3.5"',
         'mypy>=0.570,<0.700; python_version<"3.5"',
-        'mypy>=0.570; python_version>="3.5" and python_version<"3.8.0b1"',
-        'mypy>=0.701; python_version>="3.8.0b1"',
+        'mypy>=0.570; python_version>="3.5" and python_version<"3.8"',
+        'mypy>=0.700; python_version>="3.8"',
     ],
     classifiers=[
         'Development Status :: 4 - Beta',