move to v0.19.0

Author: masonproffitt

setup.py

@@ -5,7 +5,7 @@
 
 setuptools.setup(
     name="qastle",
-    version="0.18.1",
+    version="0.19.0",
     description="Query AST Language Expressions",
     long_description=long_description,
     long_description_content_type="text/markdown",