chore(ver): bump 2.0.0.dev1-->2.1.0.dev3, and more

+ chore(deps): 
  + smmap2-v2.1.0.dev4 (FIXes memoryview leak).
  + FIX quoted environment marker in requirements.
  + import actually smmap2!

gitdb/__init__.py

@@ -10,7 +10,7 @@
 __author__ = "Sebastian Thiel"
 __contact__ = "[email protected]"
 __homepage__ = "https://github.com/gitpython-developers/gitdb"
-version_info = (2, 1, 0, 'dev1')
+version_info = (2, 1, 0, 'dev3')
 __version__ = '.'.join(str(i) for i in version_info)
 
 

gitdb/test/test_pack.py

@@ -139,11 +139,6 @@ def test_pack(self):
                 self._assert_pack_file(pack, version, size)
         # END for each pack to test
 
-    ## Unless HIDE_WINDOWS_KNOWN_ERRORS, on Windows fails with:
-    # File "D:\Work\gitdb.git\gitdb\util.py", line 141, in onerror
-    #     func(path)  # Will scream if still not possible to delete.
-    # PermissionError: [WinError 32] The process cannot access the file
-    #    because it is being used by another process: 'sss\\index_cc_wll5'
     @with_rw_directory
     def test_pack_entity(self, rw_dir):
         pack_objs = []

requirements.txt

@@ -1,5 +1,5 @@
-contextlib2; python_version <= "2.7"
-#smmap>=2.1.0
+contextlib2; python_version<='2.7'
+#smmap2>=2.1.0
 
-## DEV-requirements (FIXME: remove on release)
--e git+https://github.com/ankostis/[email protected].dev1#egg=smmap
+## DEV-requirement: FIX memleak (FIXME: remove on release)
+-e git+https://github.com/ankostis/[email protected].dev4#egg=smmap2

setup.py

@@ -20,10 +20,8 @@
     packages=('gitdb', 'gitdb.db', 'gitdb.utils', 'gitdb.test'),
     license="BSD License",
     zip_safe=False,
-    install_requires=['smmap2 >= 2.1.0'],
-    extras_require={
-        ':python_version <= "2.7"': ['contextlib2'],
-    },
+    install_requires=['smmap2 > =2.1.0'],
+    extras_require={':python_version=="2.7"': ['contextlib2']},
     long_description="""GitDB is a pure-Python git object database""",
     # See https://pypi.python.org/pypi?%3Aaction=list_classifiers
     classifiers=[