.coafile: Enhance rules for commit

Adds the additional issue-reference settings from
coala/coala-bears.

Closes coala#422

Author: yashasingh

.coafile

@@ -36,3 +36,7 @@ default_actions = Jinja2Bear: ApplyPatchAction
 bears = GitCommitBear
 shortlog_regex = ([^:]*|[^:]+[^ ]: [A-Z0-9*].*)
 shortlog_trailing_period = False
+body_close_issue = True
+body_close_issue_full_url = True
+body_close_issue_on_last_line = True
+body_enforce_issue_reference = False