Natural sort, true TSV, sliding-window averages, and more

Please see:

• https://miller.readthedocs.io/en/latest/ for more about Miller
• https://miller.readthedocs.io/en/latest/installing-miller/ for installation

Features

Major features:

• Natural sort by @johnkerl in #932
• mlr split verb by @johnkerl in #898
• Make TSV finally true TSV by @johnkerl in #923
• Sliding window averages by @johnkerl in #894
• Implement shift-lead option for mlr step by @johnkerl in #893

New DSL functions:

• New fmtifnum DSL function; make fmtnum/fmtifnum recursive over maps and arrays by @johnkerl in #946
• New unformat DSL function by @johnkerl in #871
• New format DSL function by @johnkerl in #869
• New concat DSL function for arrays by @johnkerl in #868

DSL improvements:

• Support more Go regex patterns, like "\d" by @johnkerl in #974
• Include \U support in addition to \u for DSL Unicode string literals by @johnkerl in #917
• Support unicode literals in the Miller DSL by @johnkerl in #916
• Allow 0o... octal literals in the DSL by @johnkerl in #864

New command-line flags:

• Add --left-keep-fields option for mlr join by @johnkerl in #967
• New --lazy-quotes flag for helping with malformed CSV by @johnkerl in #925

REPL and on-line help:

• Let :resetblocks/:rb in the REPL take optional begin/main/end by @johnkerl in #924
• Add :resetblocks / :rb to REPL by @johnkerl in #920
• ?foo and ??foo for :help foo / :help find foo in the REPL by @johnkerl in #915

Improvements and bugfixes

• Support Latin-1 supplement a0-ff as DSL string literals by @johnkerl in #957
• Fix "%%" in strptime; more test cases for strptime by @johnkerl in #951
• Support %F, %T, and more in strptime by @johnkerl in #944
• Fix handling of mlr nest abbrevs by @johnkerl in #937
• Add Inf and NaN literals to the DSL by @johnkerl in #933
• Boolean inference for issue 908 by @johnkerl in #931
• strptime %j format for 3-digit day in year by @johnkerl in #930
• Fix is_non_empty for absent case by @johnkerl in #928
• --nidx --fs x should be the same as --fs x --nidx by @johnkerl in #912
• Update default colorization by @johnkerl in #904
• Make is_null/is_not_null DSL functions include new JSON-null type by @johnkerl in #883
• Fix #853 by @johnkerl in #860

Documentation

• New doc page: Parsing and formatting fields by @johnkerl in #973
• More doc material for :context in the REPL by @johnkerl in #966
• Fix typo in on-line help for splitax DSL function by @johnkerl in #964
• More doc-sites for the funct keyword by @johnkerl in #963
• Doc updates for funct keyword by @johnkerl in #961
• FAQ entry for #351 by @johnkerl in #958
• docs: add Poshi as a contributor for doc by @allcontributors in #956
• docs: add schragge as a contributor for doc by @allcontributors in #955
• FAQ entry for #285: carriage returns in field names by @johnkerl in #953
• Add --implicit-tsv-header as alias for --implicit-csv-header, etc by @johnkerl in #952
• Fix: multiple documentation tweaks by @Poshi in #949
• fix typo in reference-verbs.md by @zachvalenta in #945
• Add on mouse over permalink anchor for titles by @aborruso in #942
• Webdoc information on Unicode string literals by @johnkerl in #935
• 'mlr help function nonesuch' should not be silent by @johnkerl in #934
• Clarify strftime on-line help by @johnkerl in #929
• Expand on-line help for split* DSL functions by @johnkerl in #927
• On-line help for -s flag by @johnkerl in #926
• Multiple on-line-help issues from #908 by @johnkerl in #921
• Multiple on-line-help issues from #908 by @johnkerl in #913
• Fix operator-precedence doc table to match DSL grammar by @johnkerl in #911
• Fix multiple on-line-help issues from #907 by @johnkerl in #910
• Clarify source for printf-style formatting by @johnkerl in #895
• Fix #891 by @johnkerl in #892
• Improve mlr top documentation for #861 by @johnkerl in #875
• Continue #856 by @johnkerl in #865
• misspelling by @Gary-Armstrong in #863
• fix typo by @vapniks in #862
• Update installing-miller.md by @jauderho in #859
• Emit notes by @johnkerl in #858
• Conda/Docker install notes by @johnkerl in #857
• Fix typo: columnn -> column by @vapniks in #856
• Fix typo by @vapniks in #855
• Fix typo by @vapniks in #854
• A small typo by @aborruso in #846

Code quality

• Code-dedupe logic for array slices and string slices by @johnkerl in #960
• Let mlr repl print empty strings by @johnkerl in #959
• Neaten strptime.go by @johnkerl in #950
• More dead code removal by @skitt in #905
• Remove unreachable code by @skitt in #903
• Use int64 wherever "64-bit integer" is assumed by @skitt in #902
• More of #884: types in enum-consts by @johnkerl in #887
• Clean up file output handler error handling by @skitt in #886
• Use raw strings to avoid escapes by @skitt in #885
• Specify constant types except with iota by @skitt in #884
• Mlrval arrayval from []Mlrval to []*Mlrval by @johnkerl in #880
• Append slices directly instead of looping by @skitt in #879
• Fix mlrmap.Equals FieldCount comparison by @skitt in #878
• Ensure regression-test has a binary to test by @skitt in #877
• Avoid assuming ./mlr is the mlr to test by @skitt in #876
• Update release.yml by @jauderho in #867
• Update .goreleaser.yml by @jauderho in #866
• Goreleaser binary names by @johnkerl in #852
• Add CodeQL support by @jauderho in #838

New Contributors

• @vapniks made their first contribution in #854
• @Gary-Armstrong made their first contribution in #863
• @zachvalenta made their first contribution in #945
• @Poshi made their first contribution in #949

Plans for 6.2.0

Update: planned now for 6.3.0 as 6.2.0 was quick and early.

• Extended JSON-style field accessors for verbs: #763 and #948
• AWK-like exit DSL function: #341
• DSL strict mode: #440
• YAML support: #614
• Datediff: #708
• Rank: #383

Full Changelog: v6.0.0...v6.1.0