v0.1.0 — 2026-07-04 — the multiplatform decimal value type

Initial release.

Added

• Compact Long significands: values of up to 18 digits are stored in a Long
  (java's intCompact approach) with fast paths for parse, plus/minus, times,
  div/divideToIntegral, compareTo, setScale, hashCode, toLong and
  stripTrailingZeros; longer significands use exact digit-string arithmetic.
  Representation-invisible in the API; verified by the same differential oracle.
  Money-profile effect: plus and parse at java.math.BigDecimal parity on the JVM,
  2-50× ahead of ionspin bignum across the board incl. native (tables in the README).
• Division: div(other, scale, roundingMode) (both always explicit — deliberately no /
  operator), divideToIntegral (java preferred-scale semantics) and the exact % operator
  (sign follows the dividend). Division by zero always throws, even for special values.
• Mixed-operand +, -, × with Int and Long in both directions, and div/rem
  overloads (Double is deliberately excluded — binary-float noise must be converted
  explicitly).
• Benchmarks module (kotlinx-benchmark/JMH): Decimal vs java.math.BigDecimal vs
  ionspin bignum, money-profile and 30-digit corpora, JVM + native.
• Decimal: an immutable arbitrary-precision decimal value type in pure common Kotlin.
  java.math.BigDecimal-compatible parse/toString/toPlainString grammar and formatting,
  scale/precision/signum, stripTrailingZeros, movePointLeft/movePointRight,
  conversions (toDouble/toFloat/toLong/toInt + …Exact variants), factories
  (parse, of(unscaled, scale), of(Long/Int), fromDouble) and String/Long/Int/
  Double toDecimal() extensions.
• Exact arithmetic: plus, minus, times (java scale rules) and setScale with all
  eight RoundingModes.
• Value-based equals/hashCode consistent with compareTo (2.5 == 2.50) — a deliberate
  divergence from java.math.BigDecimal's scale-sensitive equality.
• Special values NaN, POSITIVE_INFINITY, NEGATIVE_INFINITY (what PostgreSQL numeric
  can emit), ordered and propagated like Double.
• JVM interop: toJavaBigDecimal(), BigDecimal.toKormiumDecimal(), RoundingMode.toJavaRoundingMode().
• Differential test suite against java.math.BigDecimal (seeded, 200k random cases per
  suite), parser fuzzing, cross-platform golden suite, explicitApi + binary-compatibility
  validation (JVM + klib).