Updated version number to 1.9 (#273)

Author: peastman

setup.py

@@ -34,7 +34,7 @@
 DOCLINES = __doc__.split("\n")
 
 ########################
-__version__ = '1.8.1'
+__version__ = '1.9.0'
 VERSION = __version__
 ISRELEASED = False
 ########################