Add scikit-learn (python3statement#153)

Author: rth

_sections/30-projects.md

@@ -11,6 +11,7 @@ style: center
 These projects pledge to drop Python 2 support in or before 2020.
 
 - [![](assets/pandas.png)pandas](https://pandas.pydata.org/)
+- [![](assets/scikit-learn.png)scikit-learn](https://scikit-learn.org/)
 - [![](assets/ipython.png)IPython](https://ipython.org)
 - [![](assets/mitmproxy.png)mitmproxy](https://mitmproxy.org/)
 - [![](assets/kivy.png)Kivy](https://kivy.org/)

assets/scikit-learn.png

@@ -124,6 +124,10 @@ $(document).ready(function (){
       {content: 'Python 2 & 3', start: '2011-10-10', end:'2018-12-31', py2:true},
       {content: 'Python 3 only', start: '2019-01-01', end:'2021-12-16'},
     ],
+    'scikit-learn':[
+      {content: 'Python 2 & 3', start: '2010-03-25', end:'2019-03-18', py2:true},
+      {content: 'Python 3 only', start: '2019-03-19', end:'2023-12-31'},
+    ],
     'ccxt':[
       {content: 'Python 2 & 3', start: '2017-05-14', end:'2019-12-31', py2:true},
       {content: 'Python 3 only', start: '2020-01-01', end:'2023-12-31'},