Changes in version 1.0.3                        

  - Added new option step_size_min_allow, which allows the solver to
    continue with a solution when a step size is driven too small
    (mrc-2095)

                        Changes in version 1.0.2                        

  - Improved implementation of the replication interface, maintaining
    most backward compatibility (the as_matrix argument is defunct, at
    least for now) (mrc-1447)

                 Changes in version 1.0.1 (2020-01-16)                  

  - Several memory errors fixed #22

                 Changes in version 1.0.0 (2019-05-16)                  

  - Initial public release
  - Validate the derivatives are finite (non-NA, non-infinite) before
    the first step, avoiding cryptic errors #13
  - Verbose output and a callback interface to get information about
    each step (or each evaluation) #12

                        Changes in version 0.0.6                        

  - Replication interface for difeq as difeq_replicate #10