Changes in version 2.1.0 (2026-03-26)                  

  - Added simulation_mode (deterministic/stochastic) and nrep support in
    configuration parsing and run metadata.

  - Improved stochastic reproducibility: provided random_seed is
    honored, and a seed is generated/stored when missing.

  - Updated stochastic transition splitting to use binomial draws for
    integer compartment flows (n_EIpresymp, n_IsympH, n_HR).

  - Improved metapopulation infection-flow indexing consistency for
    destination- specific force of infection in n_SE_eff and n_VE_eff.

  - Added bounded vaccination and transition safeguards to reduce
    overdraw risks (for example, capping applied vaccination by
    available susceptible count and guarding zero effective population
    in force-of-infection calculations).

  - Added integer row allocation for stochastic mixing flows (S and V)
    using floor-plus-residual adjustment so row totals are conserved.

  - Added regression tests for stochastic seed behavior, nsim * nrep
    instance counts, and row-allocation conservation checks for S/V
    mixing.

  - Enhanced results helper APIs:
    
      - MetaRVMResults$plot() now provides direct trajectory plotting
        before summarization.
      - MetaRVMSummary$plot() now supports instance-trajectory plotting.
      - summarize() uses a more efficient single-pass grouped
        aggregation.

                 Changes in version 2.0.0 (2026-03-19)                  

  - Subpopulation categories are now user-defined from
    population_data$initialization; non-reserved columns are detected
    automatically.

  - Improved checkpoint restore behavior in parse_config(): when
    restore_from is provided, population_data$initialization can be used
    as mapping-only metadata (without N, S0, I0, etc.).

  - Improved validation messages for category filters: invalid category
    names now list available categories, and invalid category values now
    list valid values for the selected category.

  - Improved format_metarvm_output() handling of population_id and
    dynamic column selection for user-defined categories.

  - Updated documentation and vignettes to reflect user-defined
    subpopulation categories and checkpoint restore behavior.

                 Changes in version 1.0.1 (2026-01-09)                  

                 Changes in version 1.0.0 (2025-12-19)                  

  - Initial CRAN submission.