Version bump and changelog

CHANGELOG

@@ -2,8 +2,12 @@ Changelog
 =========
 
 
-0.3.5 (Unreleased)
-------------------
+0.5 (Unreleased)
+----------------
+
+
+0.4 (2018-02-18)
+----------------
 
 - Front: ambiant colors in player based on current track cover (#59)
 - Front: simplified front dev setup thanks to webpack proxy (#59)

api/funkwhale_api/__init__.py

 # -*- coding: utf-8 -*-
-__version__ = '0.3.5'
+__version__ = '0.4'
 __version_info__ = tuple([int(num) if num.isdigit() else num for num in __version__.replace('-', '.', 1).split('.')])