Update jaraco.windows to v3.6:

Dependencies:
* backports.functools-lru-cache	1.2.1
* jaraco.classes	1.3
* jaraco.collections	1.3.2
* jaraco.functools	1.11
* jaraco.structures	1.0
* jaraco.text	1.7
* jaraco.ui	1.4
* jaraco.windows	3.6
* more-itertools	2.2
* path.py	8.2.1
* six	1.10.0

libs/jaraco/ui/menu.py

@@ -0,0 +1,34 @@
+from __future__ import print_function, absolute_import, unicode_literals
+
+import itertools
+
+import six
+
+class Menu(object):
+	"""
+	A simple command-line based menu
+	"""
+	def __init__(self, choices=None, formatter=str):
+		self.choices = choices or list()
+		self.formatter = formatter
+
+	def get_choice(self, prompt="> "):
+		n = len(self.choices)
+		number_width = len(str(n)) + 1
+		menu_fmt = '{number:{number_width}}) {choice}'
+		formatted_choices = map(self.formatter, self.choices)
+		for number, choice in zip(itertools.count(1), formatted_choices):
+			print(menu_fmt.format(**locals()))
+		print()
+		try:
+			answer = int(six.moves.input(prompt))
+			result = self.choices[answer - 1]
+		except ValueError:
+			print('invalid selection')
+			result = None
+		except IndexError:
+			print('invalid selection')
+			result = None
+		except KeyboardInterrupt:
+			result = None
+		return result