do better with loop cleanup (#3245)

* do better with loop cleanup

* changelog

* remove redundant line

* Do this a bit better than the initial pass

* Improve windows support

Make some other things coroutines to work with improved design

* Wish we'd have done this right from the start...

* Update deps surrounding this

 - see bpo-23057
 - neccessary for windows users
 - nice for consistent support channel info / feature availability

* dep issue

* Fix tests

* duplication plugin py version

* actually handle this

* Reconfigure some checks with codeclimate, disable pylint for now

* style

* Is my exasperation showing yet?

* handle some stupid stuff

* meh

* dep changelog

setup.cfg

@@ -18,13 +18,13 @@ classifiers =
     License :: OSI Approved :: GNU General Public License v3 (GPLv3)
     Natural Language :: English
     Operating System :: OS Independent
-    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
     Topic :: Communications :: Chat
     Topic :: Documentation :: Sphinx
 
 [options]
 packages = find_namespace:
-python_requires = >=3.7
+python_requires = >=3.8.1
 install_requires =
     aiohttp==3.5.4
     aiohttp-json-rpc==0.12.1
@@ -87,9 +87,8 @@ style =
     black==19.3b0
     toml==0.10.0
 test =
-    astroid==2.2.5
+    astroid==2.3.3
     atomicwrites==1.3.0
-    importlib-metadata==0.19
     isort==4.3.21
     lazy-object-proxy==1.4.2
     mccabe==0.6.1
@@ -99,9 +98,9 @@ test =
     py==1.8.0
     pylint==2.3.1
     pyparsing==2.4.2
-    pytest==5.1.2
+    pytest==5.3.2
     pytest-asyncio==0.10.0
-    pytest-mock==1.11.2
+    pytest-mock==1.13.0
     six==1.12.0
     typed-ast==1.4.0
     wcwidth==0.1.7