v0.16.1

• [Build] Update build version of golang to 1.21.0
• [Improvement] Better error messages
• [Improvement] Implement /metrics/expand API
• [Improvement] Implement aliasQuery
• [Fix] aliasByNode/Tag should not disacrd tags anymore
• [Fix] VicotriaMetrics cluster now should support autocomplete for tags
• [Fix] ConstantSeries should now work as in graphite-web
• [Fix] Fix logic of hitcount function (should behave like in graphite-web)
• [Fix] alignToInterval should work well in hitcount function
• [Fix] smartSummarize should handle stop time properly
• [Fix] smartSummarize should now handle alignTo properly
• [Fix] smartSummarize should handle consolidation functiosn better
• [Fix] summarize should work as in graphite-web for functions that have only NaN values
• [Fix] toUpper and toLower now should work correctly with function names
• [Fix] Skip all whitespace during expression parsing
• [Fix] time units now case insensitive
• [Fix] use specified bootstrapInterval to adjust start time in holtWinters* class of functions
• [Fix] groupByNode should return exepcted amount of series
• [Fix] multiple fixes for exponentialMovingAverage
• [Fix] holtWinters supports seasonality argument
• [Fix] fix holtWintersAbberation behavior
• [Fix] fix behavior of Below function
• [Fix] fix sin and exp functions (description was not accurate or correct)