Changes in version 0.3.0 (2023-01-23)                  

  - MINOR CHANGE: Add debug parameter to print out propensity functions
    before compiling.

  - MINOR CHANGE: Add spaces between terms in the reaction propensity
    C++ code to avoid pasting together important key words (e.g. if and
    else).

                 Changes in version 0.2.10 (2022-09-23)                 

  - MINOR CHANGE: Turn array of propensity functions into vector of
    propensity functions.

                        Changes in version 0.2.9                        

  - MINOR CHANGE: Update RcppExports.

                 Changes in version 0.2.8 (2021-05-18)                  

  - BUG FIX: RNG now uses RNGScope to properly get and put the RNG state
    before calling RNG functions (fixes #8, thanks @bbolker!).

  - DOCUMENTATION: Added example for compile_reactions().

                 Changes in version 0.2.7 (2020-07-14)                  

  - BUG FIX: Renamed autoplot.ssa() to plot_ssa() for compatibility with
    R 4.0.

                        Changes in version 0.2.6                        

  - BUG FIX: Zap small negative propensity and state values.

  - FEATURE autoplot.ssa(): Allow plotting the firings.

  - DEBUG FEATURE ssa(): Allow returning the GillespieSSA2 instead of
    running it.

                 Changes in version 0.2.5 (2019-08-22)                  

  - BUG FIX: Use fabs() instead of abs() to calculate the absolute value
    of a floating point value.

  - BUG FIX: Precompiling returns a list of compiled function pointers,
    instead of a single function pointer that is secretly an array of
    function pointers.

                 Changes in version 0.2.4 (2019-08-05)                  

GillespieSSA2 is now on CRAN!

  - MAJOR CHANGE: Split up Rcpp code to make separate parts easier to
    test.

  - TESTING: Write unit tests for many of the functions.

  - MINOR CHANGE: Renamed ssa_direct() to ssa_exact().

  - MINOR CHANGE: Store firings, buffer and propensity objects only if
    requested.

  - BUG FIX: limiting variable in ssa_btl() should be an integer, not a
    double.

  - MINOR CHANGE: Timer now has millisecond accuracy, instead of second.

                        Changes in version 0.2.3                        

  - MAJOR CHANGE: Remove nu and propensity_functions from ssa(), instead
    expect a list of reaction() objects. This function provides a much
    more natural interface to specifying the effect and propensity of a
    reaction.

  - MINOR CHANGE: Apply small allocation optimisations to ssa_btl,
    ssa_etl and ode_em.

                        Changes in version 0.2.2                        

  - MINOR CHANGE: Renamed ssa_em() to ode_em().

                        Changes in version 0.2.1                        

  - BUG FIX: Fix isinf scope issue for Windows users.

  - MINOR CHANGE: Move ggplot2 to Suggests.

                        Changes in version 0.2.0                        

Complete rewrite of the package:

  - The main SSA function and all SSA methods have been implemented in
    Rcpp.

  - User-defined propensity functions get compiled to Rcpp at runtime.

  - All SSA methods now assume the state-change matrix nu to be sparse.

                        Changes in version 0.1.1                        

  - MINOR CHANGE: Added automated testing by travis.

  - MINOR CHANGE: Fixes to documentation.

  - MINOR CHANGE: Also output propensities.

                        Changes in version 0.1.0                        

Initial beta release of GillespieSSA2:

  - Major restructuring of GillespieSSA code.
  - Optimise main algorithm code (e.g. do not save state variables
    directly to the global environment...).
  - Implement SSA methods in Rcpp.
  - Added ode_em(), an Euler-Marumaya ODE method.