improve package description

Author: baruch11

setup.py

@@ -4,7 +4,9 @@
 
 DISTNAME = "qolmat"
 VERSION = "0.0.15"
-DESCRIPTION = "Tools to impute"
+DESCRIPTION = (
+    "A Python library for optimal data imputation using scikit-learn-compatible algorithms."
+)
 LONG_DESCRIPTION_CONTENT_TYPE = "text/x-rst"
 with codecs.open("README.rst", encoding="utf-8-sig") as f:
     LONG_DESCRIPTION = f.read()