Bumping package version to '0.2.1'.
Protecting caller options from modification by plugins (issue #23).
Adding ability to publish a different scheme than the server listens on (issue #25).
Merge branch 'issue_23' into 0.3

Conflicts:
	package.json
Merge branch 'issue_25' into 0.3
Bumping package version to '0.3.2'.