subtree defaults to None instead of empty string
import subtree name as label in imported issues
added function to extract script path (to find back templates folder)
modified issue template to use mustache syntax (pystache)
function to load template files
added pystache to requirements pip file
content now using pystache template files
added function to convert bitbucket users into github users
added organization support from config file
added demo org to sample config-file
config-file merge_repo key removed in favor of repospecific merge values