update version and add changelog

Author: UmanShahzad

CHANGELOG.md

@@ -1,5 +1,13 @@
 # IPInfo Changelog
 
+## 4.0.0
+
+#### Breaking Changes
+
+- [PR #32](https://github.com/ipinfo/python/pull/32)
+  All EOL Python versions are no longer supported; currently, Python 3.6 or greater is now **required**.
+  An asynchronous handler is available from `getHandlerAsync` which returns an `AsyncHandler` which uses **aiohttp**.
+
 ## 3.0.0
 
 #### Breaking Changes

ipinfo/handler.py

@@ -134,7 +134,7 @@ def _requestDetails(self, ip_address=None):
     def _get_headers(self):
         """Built headers for request to IPinfo API."""
         headers = {
-            "user-agent": "IPinfoClient/Python{version}/3.0.0".format(
+            "user-agent": "IPinfoClient/Python{version}/4.0.0".format(
                 version=sys.version_info[0]
             ),
             "accept": "application/json",

ipinfo/handler_async.py

@@ -172,7 +172,7 @@ def _ensure_aiohttp_ready(self):
     def _get_headers(self):
         """Built headers for request to IPinfo API."""
         headers = {
-            "user-agent": "IPinfoClient/Python{version}/3.0.0".format(
+            "user-agent": "IPinfoClient/Python{version}/4.0.0".format(
                 version=sys.version_info[0]
             ),
             "accept": "application/json",

setup.py

@@ -10,7 +10,7 @@
 
 setup(
     name="ipinfo",
-    version="3.0.0",
+    version="4.0.0",
     description="Official Python library for IPInfo",
     long_description=long_description,
     url="https://github.com/ipinfo/python",