Changes in version 1.23.2                        

    o   remove stato classes; these were deprecated since 1.5.2 and are no longer used.

    o   ontology is still available via ontology slots.

    o   rols package is deprecated; using internal functions instead.

    o   replaced ontology cache with online/offline mode

    o   added ontology output for model sequences

                       Changes in version 1.21.2                        

    o   fix renamed functions in rols

                       Changes in version 1.15.6                        

    o   fix broken tests

                       Changes in version 1.15.5                        

    o   update automated documentation generation

                       Changes in version 1.15.2                        

    o   add ellipsis to model methods

                       Changes in version 1.15.1                        

    o   remove duplicates when using param_ids for objects with inherited params

    o   set check.names = FALSE in DatasetExperiment

                        Changes in version 1.7.1                        

    o   fix as.code generic

    o   improve as.code for all objects

                        Changes in version 1.5.3                        

    o   fix variable_meta assignment

                        Changes in version 1.5.2                        

    o   use ontology slots instead of STATO

                        Changes in version 1.1.2                        

    o   improved 'show' output for objects

    o   allow ANY for entities

                        Changes in version 1.1.1                        

    o   added citations slot to struct classes

    o   added corresponding citations method

    o   added method to get/set seq_in slot

    o   as.SummarizedExepriment now works correctly

    o   using seq_in now works for sequences with more than 2 steps

                        Changes in version 1.0.0                        

    o   Biconductor 3.11 release

                       Changes in version 0.99.10                       

    o   update vignettes

    o   update documentation

    o   add 'signature' input to struct_obj_method

                       Changes in version 0.99.9                        

    o   subsetting of iterators with a single model now converts to a model sequence
	with 1 step

                       Changes in version 0.99.8                        

    o   documentation changes for Bioconductor checks

                       Changes in version 0.99.7                        

    o   fixed broken is_valid for .outputs

    o   minor documentation updates

                       Changes in version 0.99.6                        

    o   .params and.outputs inherited correctly

    o   fix some documentation issues

                       Changes in version 0.99.5                        

    o   added as.DatasetExperiment for converting SummarizedExperiment objects

                 Changes in version 0.99.4 (2020-02-04)                 

    o   Set initial value for entity on creation if not provided

    o   Rename enum 'list' to 'allowed'

                 Changes in version 0.99.3 (2020-02-03)                 

    o   Improved use of class constructors

                       Changes in version 0.99.2                        

    o   incremental changes in response to bioconductor feedback

                       Changes in version 0.99.1                        

    o   incremental changes in response to bioconductor feedback

                       Changes in version 0.99.0                        

    o   Bioconductor submission

                        Changes in version 0.4.1                        

    o   Final working release before bioconductor submission

                 Changes in version 0.2.0 (2019-07-25)                  

    o   Introduction of seq_out slot for more flexible workflows (currently method objects only)