[0.3.0] - 2026-06-07

Added

• eps parameter to optimize() and RFOptimizer.build_model() for strict monotonicity.
  When eps > 0, adjacent recency/frequency probability values are forced to differ by at least
  eps, preventing ties. Default eps=0.0 preserves the existing weak monotonicity behavior.
  Applies to all kind values (mono, mr, mf, mrc, mfc, mcc).
• Automatic upper-bound validation for eps: raises ValueError if eps exceeds
  p_max / (n - 1) (where p_max is the empirical probability maximum and n is the number
  of recency or frequency levels), ensuring the problem remains feasible.

Changed

• Kind aliases renamed from monotone_* to monotonic_* for consistent mathematical terminology.

  Old alias	New alias	Canonical
  monotone	monotonic	mono
  monotone_recency	monotonic_recency	mr
  monotone_frequency	monotonic_frequency	mf
  monotone_recency_convex	monotonic_recency_convex	mrc
  monotone_frequency_concave	monotonic_frequency_concave	mfc
  monotone_convex_concave	monotonic_convex_concave	mcc