Freeze xgboost requirement

iver56 · iver56 · commit 5d6777ccc1da · 2016-08-08T15:28:41.000+02:00
Without this, pip would fail to choose version. I guess xgboost doesn't use semantic versioning atm.
diff --git a/requirements.txt b/requirements.txt
@@ -17,7 +17,7 @@ ConfigArgParse
 liac-arff
 pandas
 Cython
-xgboost
+xgboost==0.4a30
 
 ConfigSpace
 pynisher>=0.4
