Update wd to 0.2.0

Removes no longer needed code for passing functions to execute/eval.
Adds a test to check that nodes can be passed as arguments to remote functions
and still used as a return value.
Fix code convention violation
Fix running tests against a stand-alone Sauce Labs tunnel
Update environments for self-test
Merge branch 'master' into geezer

Conflicts:
	runner.js
	tests/selftest.intern.js