Add CCXT to the list of participating projects (python3statement#145)

* Added assets/ccxt.png

* Added CCXT to the 30-projects

* Added CCXT timeline to site.js

* Moved CCXT lower in 30-projects

Author: kroitor

_sections/30-projects.md

@@ -16,6 +16,7 @@ These projects pledge to drop Python 2 support in or before 2020.
 - [![](assets/kivy.png)Kivy](https://kivy.org/)
 - [![](assets/matplotlib.png)Matplotlib](https://matplotlib.org/)
 - [![](assets/numpylogoicon.svg)NumPy](https://www.numpy.org/)
+- [![](assets/ccxt.png)ccxt](https://github.com/ccxt/ccxt)
 - [![](assets/zulip.png)Zulip](https://zulip.org)
 - [![](assets/sympy.png)SymPy](https://www.sympy.org/)
 - [![](assets/jupyter.png)Jupyter notebook](https://jupyter.org)

assets/ccxt.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'},
     ],
+    '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'},
+    ],
     'Numpy':[
       {content: 'Py 2 & 3 full', start: '2010-08-31', end:'2018-12-31', py2:true},
       {content: 'Py 2 bug fix', start: '2019-01-01', end:'2019-12-31', py2:true},