Changes in version 0.4.2 (2023-06-07)                  

    o   Load XLSX files as data.table instead of data.frame

                 Changes in version 0.4.1 (2022-03-30)                  

    o   Bringing tstools back to CRAN, maintenance release.

                Changes in version 0.3.6.1 (2018-04-24)                 

    o   regularize series using NAs, better plot support for NAs, smaller bugfixes

                 Changes in version 0.3.6 (2018-03-13)                  

    o   major co-ordination fixes, auto legends fixes. enjoy!

                Changes in version 0.3.5.1 (2018-02-07)                 

    o   CRAN release

                       Changes in version 0.3.4.2                       

    o   Improvement of tick handling, more automatic determination

                        Changes in version 0.3.4                        

    o   introduced data.table dependency

                        Changes in version 0.3.3                        

    o   speedup writeTimeSeries by optionally using data.table's rbindlist

                        Changes in version 0.3.2                        

    o   optional data.table read csv for speedup

                        Changes in version 0.3.1                        

    o   minor add ons, problems in versions fixed

                         Changes in version 0.3                         

    o   function to create regular time series from data.frames

                      Changes in version 0.2.7.9.1                      

    o   minor change to unit test to avoid re-import warning with other packages that load openxlsx.

                       Changes in version 0.2.7.9                       

    o   added function to turn quarterly to monthly series (interpolate).

                       Changes in version 0.2.7.8                       

    o   added function to start after last internal NA.