prep small 0.8.18 release

Author: John Bogaardt

chainladder/__init__.py

@@ -42,4 +42,4 @@ def auto_sparse(auto_sparse=True):
 from chainladder.methods import *  # noqa (API Import)
 from chainladder.workflow import *  # noqa (API Import)
 
-__version__ = "0.9.0"
+__version__ = "0.8.18"

setup.py

@@ -14,7 +14,7 @@
 descr = "Chainladder Package - P&C Loss Reserving package "
 name = 'chainladder'
 url = 'https://github.com/casact/chainladder-python'
-version='0.9.0' # Put this in __init__.py
+version='0.8.18' # Put this in __init__.py
 
 data_path = ''
 setup(