Remove twiggy from install requirements

CHANGELOG.md

@@ -1,6 +1,15 @@
 Changelog
 =========
 
+2.2.0 (in progress)
+---
+New features:
+-
+
+Fixes:
+-
+
+
 2.1.0
 ---
 

dev-requirements.txt

@@ -1,4 +1,3 @@
-twiggy
 python-magic
 pytest
 pytest-cov

setup.py

@@ -23,5 +23,5 @@ setup(
         'Topic :: Communications :: File Sharing',
         'Topic :: Security',
     ],
-    install_requires=['twiggy', 'python-magic'],
+    install_requires=['python-magic'],
 )