Use coverage.py 4.0a5, and remove the function we didn't need.

Author: nedbat

django_coverage_plugin/plugin.py

@@ -226,10 +226,6 @@ def statements(self):
 
         return source_lines
 
-    # Note: this function won't be needed after coverage.py 4.0a5.
-    def no_branch_lines(self):
-        return set()
-
 
 def running_sum(seq):
     total = 0

requirements.txt

@@ -1,5 +1,5 @@
 # If you change this file, don't forget to update tox.ini and setup.py also.
-coverage >= 4.0a4
+coverage >= 4.0a5
 Django >= 1.4
 six >= 1.4.0
 tox >= 1.8

setup.py

@@ -13,7 +13,7 @@
     install_requires=[
         # If you change this, update tox.ini and requirements.txt also.
         'Django >= 1.4',
-        'coverage >= 4.0a4',
+        'coverage >= 4.0a5',
         'six >= 1.4.0',
     ],
 )

tox.ini

@@ -12,7 +12,7 @@ deps =
     django17: Django >=1.7, <1.8
     django18: Django >=1.8a1, <1.9
     six >= 1.4.0
-    coverage >=4.0a4
+    coverage >=4.0a5
 
 commands =
     {envpython} -c "import tests.banner"