Directly test rate limiting
Merge pull request #185 from rcchan/ratelimit_sessionid_error

Return 401 on no session id for rate limiting, update tests
Merge pull request #166 from rcchan/console.print

Console print function
Stringify objects instead of printing [object Object]
Fall back on [object Object] for nonserializable structures (ie. cyclic)
Move object stringification to util
Console responses printed using object stringification