Fix #108 -- Don't strictly pin the 'appsdirs' dep

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 * Make summary output more friendly (Thanks to @vald-phoenix)
 * Add forgotten documentation about `IgnoreMigration`
+* Don't pin the `appdirs` strictly to 1.4.3, but allow higher versions
 
 ## 2.1.0
 

setup.py

@@ -33,7 +33,7 @@ setup(
     packages=find_packages(exclude=["tests/"]),
     install_requires=[
         "django>=1.11",
-        "appdirs==1.4.3",
+        "appdirs>=1.4.3",
         'enum34==1.1.6;python_version<"3.4"',
         "six==1.14.0",
     ],