Changes in version 0.1.0 (2026-10-08)                  

  - Friedkin-Johnsen core: fj_check() validates inputs and reports
    convergence diagnostics, fj_equilibrium() and fj_influence() compute
    the fixed point and the total influence matrix, fj_simulate()
    iterates the dynamics. Signed influence matrices are supported.
  - sint_simulate() simulates latent and manifest dynamics with
    influence matrices and susceptibilities that may depend on time and
    state.
  - Response functions response_logistic() and response_threshold(),
    with climate_balance() for endogenous normative pressure.
  - aggregate_quota() maps manifest responses to collective outcomes.
  - row_normalize() builds influence matrices from unnormalized weights.
  - influence_matrix() converts matrices, 'igraph' graphs and 'network'
    objects into influence matrices.
  - User guide vignette, vignette("SINT").