release version 0.15.3

Author: davidism

CHANGES.rst

@@ -3,7 +3,7 @@
 Version 0.15.3
 --------------
 
-Unreleased
+Released 2019-05-14
 
 -   Properly handle multi-line header folding in development server in
     Python 2.7. (:issue:`1080`)

src/werkzeug/__init__.py

@@ -17,7 +17,7 @@
 import sys
 from types import ModuleType
 
-__version__ = "0.15.2"
+__version__ = "0.15.3"
 
 # This import magic raises concerns quite often which is why the implementation
 # and motivation is explained here in detail now.