Update CHANGELOG

CHANGELOG

+VERSION 3.2 - FÉVRIER 2018
+    Costum module & its documentation & clean up custom to costum
+    Migration of all projects in costum module and cleaning CO2
+    Refactor links.js (API AJAX function) and full fix on button in directory of links
+    Lot of  fix on mobile view
+    Repair stats viewer on week different & sum up all connexion to give an approximative visite on website
+    Sourcing of users registered and invite from a costum interface => give a administration interface of admins costum
+    Manage directly the community of the context costum in admin interface (migrating work on cte on common tool in coomunecter toolkit)
+
+
 VERSION 3.1 - YELLOW SUBMARINE - NOVEMBRE 2018 - https://github.com/pixelhumain/co2/releases/tag/3.1
 
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