Update the supported Python versions

Python 3.4 has reached end of life whereas 3.7 and 3.8 have been
released.

Author: pgjones

.travis.yml

@@ -7,11 +7,10 @@ python:
   - pypy
   - pypy3
   - 2.7
-  - 3.4
   - 3.5
   - 3.6
   - 3.7
-  - 3.8-dev
+  - 3.8
 
 before_install:
   - pip install -U pip setuptools wheel

README.rst

@@ -112,7 +112,7 @@ library.
 It has a test suite with 100.0% coverage for both statements and
 branches.
 
-Currently it supports Python 3 (testing on 3.4-3.7), Python 2.7, and PyPy.
+Currently it supports Python 3 (testing on 3.5-3.8), Python 2.7, and PyPy.
 (Originally it had a Cython wrapper for `http-parser
 <https://github.com/nodejs/http-parser>`_ and a beautiful nested state
 machine implemented with ``yield from`` to postprocess the output. But

docs/source/index.rst

@@ -44,7 +44,7 @@ whatever. But h11 makes it much easier to implement something like
 Vital statistics
 ----------------
 
-* Requirements: Python 2.7 or Python 3.4+ (PyPy works great)
+* Requirements: Python 2.7 or Python 3.5+ (PyPy works great)
 
 * Install: ``pip install h11``
 

setup.py

@@ -26,10 +26,10 @@
         "Programming Language :: Python :: 2",
         "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.4",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
         "Topic :: Internet :: WWW/HTTP",
         "Topic :: System :: Networking",
     ],

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = format, py27, py33, py34, py35, pypy
+envlist = format, py27, py35, py36, py37, py38, pypy
 
 [testenv]
 deps= -r{toxinidir}/test-requirements.txt