Randomness 1.13.0

Added

• A "Show dice formula" setting. Inline rolls can now show what
  was rolled next to the result — 2d6+3 → 11 instead of a bare 11
  — without adding a flag to every call. Settings → Randomness → Show
  dice formula, off by default. It covers both prefixes, so
  `rdm:{2d6+3}` and `dice:2d6+3` read the same (the {…}
  wrapper is dropped from the display), and it only touches rolls that
  actually rolled dice, so `rdm:[@Weather]` is unaffected. A
  dice: span still overrides it per roll: |form shows the formula
  with the setting off, |noform hides it with the setting on, and
  |text(label) wins over both. The formula is display only — locking
  a roll commits the result, as before. |noform had been accepted
  and ignored until now. Thanks to Anna_B_Meyer for the request.