v3.0.1

✨ Features

• indexed times, (times [i n] body...) (#827)
• add generation-2 compressed columns
• add q-style F32 literals (#911)
• add nanosecond timespan values (#917)

🐛 Bug fixes

• drop a late _POSIX_C_SOURCE define in test_link.c (#774)
• validate CLI integers and cap worker count (#793)
• reject arguments to snapshot and sync (#795)
• finalize owned programs and guard serialization (#797)
• reject arguments to read-only introspection calls (#798)
• run tasks past the ring in further rounds of the same grain (#805)
• unsigned key spans, numeric F64 composite order, F32 key test (#806)
• parted STR/LIST group merge; composite keys at full symbol width (#807)
• parted avg/var over nulls, binary-agg second operand, keyless emit, merge by position (#815)
• print an uncaught raise's value, rendered lazily and bounded (#811)
• implement multi-branch if in both evaluators (#812)
• abort cancelled batch interns before commit (#825)
• sort, take, format and serialize parted tables in place (#826)
• free the superseded generation at reopen instead of retiring it (#832)
• at keeps a typed vector's type for any integer index (#829)
• comparisons and and/or/not work element-wise on a LIST (#830)
• dyadic min/max give the operands' promoted type; LIST results typed (#831)
• release distinct error values on failure (#834)
• skip memory flag value in .sys.args (#835)
• preserve signed zero in constant pool (#836)
• reverse tables and dictionaries (#837)
• parted where/take/group fixes; column-free aggregate sources (#833)
• amend a dotted target in place when its dict chain is sole-owned (#839)
• sort nullable min groups after aggregation (#843)
• avoid raw-sum ranking for affine top-N (#844)
• map, fold and scan box a typed vector one element at a time (#840)
• reject local targets before global writes (#846)
• select clang by default and test clang 23 in CI (#845)
• a cancelled splayed write publishes nothing (#860)
• affine sum bias counts the non-null rows (#861)
• LIST cells keep inner nulls and GUIDs, table/dict cells compare by value (#863)
• eval-level grouping over parted tables, by-dict aliases and LIST keys (#862)
• print a null symbol as ', not null (#872)
• take rows from a parted table handle (#867)
• materialize a lazy result inside the timed span (#868)
• free nested containers without recursing per level (#874)
• rebuild the build-info objects when the version or date changes (#875)
• keep a DATE or TIME atom within 32 bits, as its vector cells are (#879)
• read a time literal's fraction as a decimal fraction of a second (#885)
• never follow a link when removing what the store cleans up (#878)
• apply a parsed float's sign through its bits, not FP negation (#887)
• decline unary numeric DAG ops on types their builtins reject (#891)
• break top-N ties on first source row (#892)
• strlen sum/avg skip the empty string on every route (#888)
• sorted, taken and parted routes honour a lambda local that hides a column (#889)
• free the count-distinct where-sample chunk list once (#899)
• parse F32 and GUID nulls and align F32 casting and printing (#901)
• finalize parallel null flags only after workers join (#903)
• preserve WHERE predicate row domains (#908)
• return ordinary BOOL and U8 values for null inputs (#913)
• decline temporal div and mod in the select DAG (#906)
• isolate whole-row reader input domains (#916)
• decline mixed symbol equality operands (#928)
• a null atom gives a typed null (#931)
• a zero divisor gives a null in fused arithmetic (#932)
• keep the F64 type of a whole-number float bias in sum and avg (#941)
• use 32-bit TIME in sortedness shortcut (#939)
• reject non-atom results in flat STR casts (#927)
• handle delimiters longer than split input (#953)
• restrict float promotion to I64/F64 atoms (#965)
• return B8 for symbol prior comparisons (#967)
• promote both integer atom subtraction operands (#979)
• distinguish dyadic minmax from reductions (#980)
• compute TIMESPAN medians through rank kernels (#982)

⚡ Performance

• reuse already ordered select input (#847)
• use asof index for null-free symbol keys (#848)
• answer a dotted name's flat global lookup from a slot filter (#870)
• build adjacency lists by counting sort instead of sorting all edges (#886)
• count and scatter edges on the pool when building a CSR (#895)
• keep integer rounding in the select DAG (#896)
• batch staged SYM strlen accumulation (#910)
• take split WHERE rows without a full gather (#907)
• avoid double rounding bulk growth payloads (#925)
• keep sizing off reserved-capacity single appends (#938)
• rank symbols before parallel sortedness checks (#937)
• avoid repeated parted metadata walks (#936)
• retain left columns for identity output mappings (#943)
• skip speculative hashing for minimum chained tables (#942)
• size the default pool from the CPUs the process may run on (#944)
• index global binding writes by symbol (#955)
• memory bounds on small machines, wide dense grouping, compressed-column range reads, trusted own files, per-column symbol files (#964)

📚 Documentation

• document embedding as a static library (#783)
• name resolution in queries; take cycles (#817)
• document every .sys.mem key (#890)
• explain filter domain barriers and static ranking (#909)
• describe sequential callbacks and kernel parallelism (#949)

🔧 Maintenance & internal

• test(app): cover CLI argument errors (#799)
• build: scope section GC flags to static library (#804)
• test(heap): measure discarded spill pages against the dirty ones (#857)
• test: pool read-ahead and pty master-close tests hold on older kernels (#873)
• test(heap): check the spill discard where a punch cancels no writes (#894)
• test(mem): replace caller-heap fallback peak proxy with scoped oracles (#915)
• test(opt): exercise subset invariance on copied row subsets (#914)

Full changelog: v2.11.5...v3.0.1