Stop pinning lz4bump-lz4

Opening a PR to check if tests pass with the new version. If so, we'll want to bump `requirements-dev.txt` as well.

Many thanks to @jonathanunderwood for his diligent work here: https://github.com/dpkp/kafka-python/issues/1021#issuecomment-359161985

1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index d076702..c2558f5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,7 +18,7 @@ deps =
     pytest-mock
     mock
     python-snappy
-    lz4==0.11.1
+    lz4
     xxhash
     py26: unittest2
 commands =