MAINT fix pyrfr requirement in requirements.txt

mfeurer · mfeurer · commit ea081cfba706 · 2017-08-14T19:49:58.000-07:00
diff --git a/requirements.txt b/requirements.txt
@@ -18,5 +18,5 @@ pandas
 
 ConfigSpace>=0.3.3,<0.4
 pynisher>=0.4
-pyrfr>=0.4.0
+pyrfr>=0.4.0,<0.5
 smac==0.5.0
