In Appveyor we have the following failure:
```
======================================================================
ERROR: test_RC_pagegenerator_result (tests.pagegenerators_tests.EventStreamsPageGeneratorTestCase)
Test RC pagegenerator.
----------------------------------------------------------------------
Traceback (most recent call last):
File "c:\projects\pywikibot-g4xqx\tests\pagegenerators_tests.py", line 1577, in test_RC_pagegenerator_result
entries = list(pagegenerator)
File "c:\projects\pywikibot-g4xqx\pywikibot\pagegenerators.py", line 2664, in LiveRCPageGenerator
for entry in site_rc_listener(site, total=total):
File "c:\projects\pywikibot-g4xqx\pywikibot\comms\eventstreams.py", line 300, in __iter__
event = next(self.source)
File "build\bdist.win32\egg\sseclient.py", line 90, in __next__
next_chunk = next(self.resp_iterator)
File "build\bdist.win32\egg\sseclient.py", line 67, in generate
chunk = self.resp.raw._fp.fp.read1(self.chunk_size)
AttributeError: '_fileobject' object has no attribute 'read1'
----------------------------------------------------------------------
Ran 1765 tests in 752.765s
```
Seems this is from upstream because sseclient had a change in 0.0.23 recently