Work around utter disregard of semver

vdirsyncer/utils/__init__.py

@@ -4,7 +4,7 @@ import os
 import sys
 import uuid
 
-from .compat import iteritems, to_unicode
+from .compat import getargspec_ish, iteritems, to_unicode
 from .. import exceptions
 
 
@@ -84,8 +84,7 @@ def get_etag_from_fileobject(f):
 def get_class_init_specs(cls, stop_at=object):
     if cls is stop_at:
         return ()
-    import inspect
-    spec = inspect.getargspec(cls.__init__)
+    spec = getargspec_ish(cls.__init__)
     supercls = next(getattr(x.__init__, '__objclass__', x)
                     for x in cls.__mro__[1:])
     return (spec,) + get_class_init_specs(supercls, stop_at=stop_at)

vdirsyncer/utils/compat.py

@@ -34,6 +34,7 @@ def _wrap_native(f, encoding='utf-8'):
 if PY2:  # pragma: no cover
     import urlparse
     import urllib as _urllib
+    from inspect import getargspec as getargspec_ish  # noqa
 
     # Horrible hack to make urllib play nice with u'...' urls from requests
     urlquote = _wrap_native(_urllib.quote)
@@ -46,6 +47,8 @@ if PY2:  # pragma: no cover
 
 else:  # pragma: no cover
     import urllib.parse as urlparse
+    from inspect import getfullargspec as getargspec_ish  # noqa
+
     urlquote = urlparse.quote
     urlunquote = urlparse.unquote
     text_type = str