websocket.js: Use comma delimiters in console.log calls

Instead of using '+' to concatenate strings.  This displays similarly
(with the string representation of the JavaScript object), but allows
you to drill down into that object using the developer console.

Reported-by: Gary D. Burch <burch.aug@gmail.com>
Bump version to 0.1.1

Changes since 0.1.0:
* d339648 websocket.js: Use comma delimiters in console.log calls
websocket.js: Add optional 'options' to websocket.register

Sometimes we want an exact topic match, instead of a prefix match.
The new 'options' argument makes that possible, while also supplying a
framework for other keyword-argument style tweaks that we may want to
add in the future.
Bump version to 0.1.2

Changes since 0.1.2:
* e99dad8 websocket.js: Add optional 'options' to websocket.register