Bump sha

Document use without specifying dirs

Prevent error on self-require

tns deps considers this circular (which it is) but Clojure seems to
handle it just fine.  sci does this, which is popular enough (via
reitit) that this is a problem.

Bump sha

Consider threshold when printing groups

Add threshold CLI flag

Add newlines around groups header

Makes it stand out more

Fix double call to ns-graph

Speed up recursive-ns-decls

Skip already seen decls, reduces processing significantly.

Fix typo in README

Add docs on the output

Add sha to README

Add initial version