Give up on 3.7 support for now

Travis CI xenial works for 3.7 but not PyPy. Oh well.

.travis.yml

@@ -1,4 +1,3 @@
-dist: xenial
 language: "python"
 dist: xenial
 python:

CHANGELOG.rst

@@ -6,7 +6,6 @@ Changes
 
 - Tie Travis CI to jazzband instance
 - Remove EOL 3.3 and 3.4 version support
-- Add 3.7 version support
 
   - https://github.com/jazzband/python-geojson/pull/120
 

README.rst

@@ -21,7 +21,7 @@ This library contains:
 Installation
 ------------
 
-python-geojson is compatible with Python 2.7, 3.5, 3.6 and 3.7. It is listed on `PyPi as 'geojson'`_. The recommended way to install is via pip_:
+python-geojson is compatible with Python 2.7, 3.5, and 3.6. It is listed on `PyPi as 'geojson'`_. The recommended way to install is via pip_:
 
 .. code::
 

setup.py

@@ -31,8 +31,8 @@ def test_suite():
 
 major_version, minor_version = sys.version_info[:2]
 if not ((major_version == 2 and minor_version == 7)
-        or (major_version == 3 and minor_version >= 5)):
-    sys.stderr.write("Sorry, only Python 2.7, and 3.5 and up are supported "
+        or (major_version == 3 and minor_version in (5, 6))):
+    sys.stderr.write("Sorry, only Python 2.7, 3.5, and 3.6 are supported "
                      "at this time.\n")
     exit(1)
 
@@ -69,7 +69,6 @@ def test_suite():
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
         "Topic :: Scientific/Engineering :: GIS",
     ]
 )

tox.ini

@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py{27,35,36,37}, pypy, pypy3
+envlist = py{27,35,36}, pypy
 
 [testenv]
 commands = {envpython} setup.py test