Bump version to 0.8.6 in preparation of a release

Author: sierra-moxon

setup.py

@@ -4,7 +4,7 @@
     REQUIREMENTS = FH.readlines()
 
 NAME = 'bmt'
-VERSION = '0.8.5'
+VERSION = '0.8.6'
 DESCRIPTION = 'Biolink Model Toolkit: A Python API for working with the Biolink Model'
 URL = 'https://github.com/biolink/biolink-model-toolkit'
 AUTHOR = 'Deepak Unni', 'Sierra Moxon'