common: add alternative way to initialize NamedInts and lower python dependency to 3.6

lib/logitech_receiver/common.py

@@ -82,14 +82,15 @@ class NamedInts:
     """
     __slots__ = ('__dict__', '_values', '_indexed', '_fallback', '_is_sorted')
 
-    def __init__(self, **kwargs):
+    def __init__(self, dict=None, **kwargs):
         def _readable_name(n):
             if not is_string(n):
                 raise TypeError('expected string, got ' + str(type(n)))
             return n.replace('__', '/').replace('_', ' ')
 
         # print (repr(kwargs))
-        values = {k: NamedInt(v, _readable_name(k)) for (k, v) in kwargs.items()}
+        elements = dict if dict else kwargs
+        values = {k: NamedInt(v, _readable_name(k)) for (k, v) in elements.items()}
         self.__dict__ = values
         self._is_sorted = False
         self._values = list(values.values())

setup.py

@@ -59,7 +59,7 @@ For instructions on installing Solaar see https://pwr-solaar.github.io/Solaar/in
     # sudo apt install python-gi python3-gi \
     #        gir1.2-gtk-3.0 gir1.2-notify-0.7 gir1.2-ayatanaappindicator3-0.1
     # os_requires=['gi.repository.GObject (>= 2.0)', 'gi.repository.Gtk (>= 3.0)'],
-    python_requires='>=3.7',
+    python_requires='>=3.6',
     install_requires=[
         'evdev (>= 1.1.2)',
         'pyudev (>= 0.13)',