• [Fix] smartSummarize now supports wildcards in the metric names (thx to @Peter-Sh)
• [Fix] json format correctly distinguishes between +-inf and nan (thx to @faceair)
• [Fix] prometheus backend: fix a bunch of problems related to globs and regex escaping (thx to @rodio)
• [Fix] Proper fix for prometheus backend and non-taged render requests with groupByNodes function
• [Fix] Align timestamps in prometheus backend (thx to @rodio, #467)
• [Fix] Prometheus backend wasn't working correctly for non-taged render requests (#465, thx to @menai34 for proposed fix)
• [Fix] Fix panic when using prometheus tagged response for non-tagged queries in groupByTags function (and maybe more)
• [Fix] Add proper aliases for aggregate functions - that would make groupByTags properly usable with functions like diff and total.
• [Improvement] Redesign error handling and logging. Logging should be now less noisy and all error messages should contain better reasoning about error cause
• [Improvement] Move some of the logging messages to Debug level - that should make logs less noisy and still preserve ability to see detailed errors on Debug level
• [Improvement] Add a config parameter to disable tldCache (useful for clickhouse-based backends)
• [Improvement] Implement noNullPoints query parameter. Works only with JSON as in graphite-web
• [Improvement] For all SeriesLists functions, allow to specify default argument (thx to kolobaev@)
• [Improvement] Add support for round function (thx to kolobaev@)
• [Improvement] Add integralByInterval function (thx to faceair@)
• [Improvement] Add sortBy function (thx to misiek08@)
• [Improvement] Add smartSummarize function (thx to misiek08@)
• [Fix] /render and /metrics/find URLs now works correctly for format=carbonapi_v2_pb (protov3) and for new format (carbonapi as a carbonapi's backend)
• [Fix] Allow '%' in metric names
• [Fix] zipper metrics now exported again
• [Fix] applyByNode - fix various incompatibilities with graphite-web (node starts with 1, some rewrite related issues, etc) (thx to faceair@)
• [Fix] Honor SendGlobAsIs and AlwaysSendGlobAsIs (important for pre-0.12 configs)
• [Fix] Fix panic in some cases when one of the metrics is missing
• [Fix] Compatbility fixes to useAboveSeries (now it's behavior matches graphite-web's)
• [Fix] Fix seriesList functions in case of unsorted responses (*seriesList sorts denomniators and numerators first of all)
• [Fix] Fix pprof endpoint routing (thx to faceair@)
• [Fix] Various fixes around error handling (thx to faceair@)
• [Fix] Avoid multiple requests for time moving based functions (thx to faceair@)
• [Code] Make linters much more happier about the code (thx to faceair@ for contribution)
• [Breaking] [Code] Comment out support for gRPC backend type. It was never properly tested and likely need complete rework before it will be usable
• [Breaking] [Build] Minimum Supported golang version is 1.13.0