TI-48: Timewarrior hook is not Python3 compatible

- Thanks to Josh Proehl, Armado Martinez.

AUTHORS

@@ -21,6 +21,7 @@ The following submitted code, packages or analysis, and deserve special thanks:
   Felix Wolfsteller
   Jörg Krause
   Richard Brown
+  Armado Martinez
 
 Thanks to the following, who submitted detailed bug reports and excellent
 suggestions:

ChangeLog

@@ -14,6 +14,8 @@
           (thanks to Michael Meier)
 - TI-47   first call successfully creates new database but returns exit status 1
           (thanks to Georg Sauthoff).
+- TI-48   Timewarrior hook is not Python3 compatible
+          (thanks to Josh Proehl, Armado Martinez)
 - TI-49   new theme files aren't installed
           (thanks to Richard Brown).
 - TI-51   in the taskwarrior hook, deleting a task doesn't stop the watch

ext/on-modify.timewarrior

@@ -57,16 +57,16 @@ combined = ' '.join(['"%s"' % tag for tag in tags]).encode('utf-8').strip()
 
 # Started task.
 if 'start' in new and not 'start' in old:
-  os.system('timew start ' + combined + ' :yes')
+  os.system('timew start ' + combined.decode() + ' :yes')
 
 # Stopped task.
 elif not 'start' in new and 'start' in old:
-  os.system('timew stop ' + combined + ' :yes')
+  os.system('timew stop ' + combined.decode() + ' :yes')
 
 # TI-51 - in the taskwarrior hook, deleting a task doesn't stop the watch
 #
 # Broadened to: Any task that is active, with a non-pending status should not
 # be tracked.
 elif 'start' in new and new['status'] != 'pending':
-  os.system('timew stop ' + combined + ' :yes')
+  os.system('timew stop ' + combined.decode() + ' :yes')