Use upstream pathlib instead of packaged one

buildmsi.py

@@ -29,7 +29,7 @@
 
 import pkg_resources
 from nsist import InstallerBuilder
-from spreads.vendor.pathlib import Path
+from pathlib import Path
 
 import spreads
 

setup.py

@@ -150,6 +150,7 @@ def run(self):
         "psutil >= 2.0.0",
         "isbnlib >= 3.3.8",
         "enum34 >= 1.0.3",
+        "pathlib >= 1.0.1",
     ],
     extras_require={
         "chdkcamera": ["jpegtran-cffi >= 0.4", "chdkptp.py >= 0.1.2"],

spreads/config.py

@@ -25,7 +25,7 @@
 import logging
 
 import spreads.vendor.confit as confit
-from spreads.vendor.pathlib import Path
+from pathlib import Path
 
 import spreads.util as util
 

spreads/main.py

@@ -30,7 +30,7 @@
 
 import colorama
 from spreads.vendor.confit import ConfigError
-from spreads.vendor.pathlib import Path
+from pathlib import Path
 
 import spreads.cli as cli
 import spreads.plugin as plugin

spreads/util.py

@@ -37,7 +37,7 @@
 import psutil
 import roman
 from colorama import Fore, Back, Style
-from spreads.vendor.pathlib import Path
+from pathlib import Path
 
 
 class SpreadsException(Exception):