FIX typo and bump imbens version 0.1.6 (close #19)

Author: ZhiningLiu1998

setup.py

@@ -36,12 +36,12 @@
 LICENSE = "MIT"
 REQUIRED = [
     "numpy>=1.13.3",
-    "pandas>=1.1.3"
+    "pandas>=1.1.3",
     "scipy>=0.19.1",
     "scikit-learn>=0.24",
     "joblib>=0.11",
     "imbalanced-learn>=0.7.0",
-    "imbalanced-ensemble>=0.1.3",
+    "imbalanced-ensemble>=0.1.6",
 ]
 EXTRAS = {
 }