Merge pull request #573 from deis/hotfix-pin-lzma

blacklist backports.lzma v0.0.4

Author: dmp42

setup.py

@@ -21,7 +21,7 @@
 
 if ver < (3, 0):
     # Python 2 requires lzma backport
-    requirements.insert(0, 'backports.lzma>=0.0.2')
+    requirements.insert(0, 'backports.lzma>=0.0.2,!=0.0.4')
     if ver < (2, 7):
         # Python 2.6 requires additional libraries
         requirements.insert(0, 'argparse>=1.2.1')