1.3.0

The final planned release of the 1.x line. It backports the features and critical fixes
from the upcoming 2.0 and deprecates every API that 2.0 removes, so migrating is mostly
a matter of following compiler warnings.

Fixed

• AnyRandomGenerator never advanced the caller's RNG. Erased generators — including
  the built-in number, uppercaseLetter, lowercaseLetter and character(in:)
  presets — replayed the same value forever under a seeded RNG. Seeded sequences that
  involve erased generators will change with this fix; the first draw is unaffected.
• Zip(...).map { a, b, c in } failed to compile on Swift 6.3 (pack-expansion tuples are
  no longer destructured into multi-parameter closures). A map overload on Zip that
  receives the values as separate arguments restores the spelling, and CI now also builds
  with the current Xcode toolchain and the latest Swift Linux image.
• IPAddressGenerator imports Foundation explicitly (required under
  MemberImportVisibility).
• Shuffled no longer requires Element.Element: Equatable; shuffling never compares
  elements.

Added

• RandomGenerators.Bernoulli / .bool(probability:) — biased coin.
• orNil(probability:) — produce nil with a given probability.
• RandomGenerators.Normal (Box–Muller) and RandomGenerators.Exponential distribution
  generators, with .normal(mean:standardDeviation:) / .exponential(rate:) sugar.
• RandomGenerators.oneOf(...) — uniform pick across 2–4 generators of different
  concrete types sharing an element type.
• RandomGenerators.string(of:count:) and characterGen.string(count:) — build strings
  directly from a character generator.
• Seeded RNGs: Xoshiro256 (xoshiro256++), SplitMix64, and PCG (with independent
  streams via sequence:). LCRNG documents its statistical weakness and points
  simulations at these.
• RandomGenerators.frequency(_:) static factory (the 2.0 spelling).
• BoolGenerator typealias (the 2.0 name for BoolRandomGenerator).

Deprecated (removed in 2.0)

• ZipArrayGenerator, zipAll(), zipGenerators(...) → use [generators].collect().
• gen.always(_:) → construct Always(_:) directly (the receiver was ignored).
• gen.colorGenerator(alpha:) → construct ColorGenerator(alpha:) directly.
• gen.frequency(_:) → RandomGenerators.frequency(_:) (the receiver was never part of
  the distribution).
• gen.character(in:) / gen.unicodeScalar(in:) → RandomGenerators.character(in:)
  (the upstream generator was ignored).
• uiColor(alpha:using:) / swiftUIColor(alpha:using:) → uiColor(using:) /
  swiftUIColor(using:) (the alpha parameter was silently ignored; set alpha at
  initialization).
• CreditCardGenerator.Generated → Element.