Serialize matrices correctly.
First graphing support.
Add "w" (weeks) as a valid timeunit.
Add case-statement for OR, which still needs to be implemented.
Use correct label name for metric name in rule.
General graphing improvements and frontend whitespace cleanups.
Add CSS styles for graphing frontend.
Fix whitespace with "make format".
Return API errors in JSON format.
Implement per-second rate behavior for rate().
Add error propagation to web UI via special JSON error type.
Add support for matrix duration strings without quotes.