Lock down Flask version

This project is not compatible with Flask 1.

Author: kevinburkefreenome

setup.py

@@ -43,7 +43,7 @@
 
 #: The installation requirements for Flask-Restless. Flask-SQLAlchemy is not
 #: required, so the user must install it explicitly.
-REQUIREMENTS = ['flask>=0.10', 'sqlalchemy>=0.8', 'python-dateutil>2.2']
+REQUIREMENTS = ['flask>=0.10,<=0.12.4', 'sqlalchemy>=0.8', 'python-dateutil>2.2']
 
 #: The absolute path to this file.
 HERE = os.path.abspath(os.path.dirname(__file__))