Feature timewarp parse date 867 (#951)

* Working on tests for timewarp --parse-date

* Test working for --parse-date

* Refactored date utils out of timewarp.py

* Added timezone to --parse-date, updated tests

* Added cog to README

tests/TestTimeWarp-13.1.0.photoslibrary/database/search/searchProgress.plist

@@ -22,5 +22,7 @@
 	<array/>
 	<key>removeMoment</key>
 	<array/>
+	<key>renamePerson</key>
+	<array/>
 </dict>
 </plist>