Rename time.py to monotonic.py

This makes it possible to run modules in the lib/ directory standalone.

powerline/lib/file_watcher.py

@@ -7,10 +7,10 @@ __docformat__ = 'restructuredtext en'
 import os
 import sys
 import errno
-from powerline.lib.time import monotonic
 from time import sleep
 from threading import RLock
 
+from powerline.lib.monotonic import monotonic
 
 class INotifyError(Exception):
 	pass

powerline/lib/memoize.py

@@ -1,7 +1,7 @@
 # vim:fileencoding=utf-8:noet
 
 from functools import wraps
-from powerline.lib.time import monotonic
+from powerline.lib.monotonic import monotonic
 
 
 def default_cache_key(**kwargs):

powerline/lib/threaded.py

@@ -2,7 +2,7 @@
 
 from __future__ import absolute_import
 
-from powerline.lib.time import monotonic
+from powerline.lib.monotonic import monotonic
 
 from threading import Thread, Lock, Event
 

powerline/segments/common.py

@@ -13,7 +13,7 @@ from powerline.lib import add_divider_highlight_group
 from powerline.lib.url import urllib_read, urllib_urlencode
 from powerline.lib.vcs import guess
 from powerline.lib.threaded import ThreadedSegment, KwThreadedSegment, with_docstring
-from powerline.lib.time import monotonic
+from powerline.lib.monotonic import monotonic
 from powerline.lib.humanize_bytes import humanize_bytes
 from powerline.theme import requires_segment_info
 from collections import namedtuple