Changes in version 0.4.1                        

  - update citation file to match new CRAN requirements.
      - introduce check for enough chill days in method Menzel (Thanks
        @valentingar for reporting)

                 Changes in version 0.4.0 (2022-11-01)                  

  - introduced threshold Tsum.crit for sum of day degrees in function
    vegperiod()
      - made plausibility check optional via new parameter check.data
        (suggested by @rhabel)
      - restructured documentation to provide more details on start and
        end methods
      - acknowledged funder in DESCRIPTION
      - fixed a changed URL

                 Changes in version 0.3.1 (2021-02-02)                  

  - if StdMeteo does not find an end, it now reports the last day of the
    year instead of 0.

                         Changes in version 0.3                         

  - fix est.prev parameter used in start method Menzel. Now averages as
    advertised (Thanks for catching this bug to @awellpott).
      - switched to unit testing framework tinytest

                 Changes in version 0.2.7 (2020-07-23)                  

  - changed temperature plausibility checks because of severe
    winter 1956 with daily mean temperatures of -27 °C in Germany and
    even lower and higher daily mean temperatures in climate scenarios.

                 Changes in version 0.2.6 (2019-08-04)                  

  - fixed change of base URL of DWD open data (Thanks @ckluss for
    reporting and pointing in the right direction)
      - fixed download of recent monthly climate data. Breakage caused
        by DWD file name schema change (#1). Thanks @rwoerde for
        reporting.
      - corrected minimum R version. Argument fileEncoding was
        introduced to read.fwf() in R 3.2

                 Changes in version 0.2.5 (2018-11-14)                  

  - replaced package 'RCurl' with 'curl' for downloading DWD Data
      - stopped importing package 'methods'
      - fixed read.DWDstations() because DWD changed layout of station
        list
      - updated documentation of read.DWDdata() because DWD changed
        column order of climate data files

                        Changes in version 0.2.4                        

  - vegperiod() checks if Tavg (daily mean temperature) is between -25
    and 35 to catch temperatures multiplied by 10. Sometimes done to
    store as integers. (thanks to Ronald Bialozyt for reporting a crash)

                        Changes in version 0.2.3                        

  - vegperiod() reports end of vegetation period always as integer
      - new parameter 'quiet' to readDWDdata to suppress messages and
        progessbar of download
      - started unit testing with package 'testthat'

                        Changes in version 0.2.2                        

  - start.method='Ribes uva-crispa' using leaf out of gooseberry as
    indicator. Developed by Germany's National Meteorological Service
    (DWD).
      - est.prev can now be equal to number of provided years
      - proper error message if only one year of data provided and
        previous year's chill days requested

                        Changes in version 0.2.1                        

  - cleaned up mangled output of start.method='StdMeteo'. StdMeteo now
    behaves properly and returns a vector.
      - use stats::filter() in the package to protected filter() against
        getting run over by package dplyr (thanks to Cristabel Duran for
        reporting).

                        Changes in version 0.2.0                        

New Features

  - read.DWDdata() reads open meteo data from the Climate Data Center
    (CDC) of Germany's National Meteorological Service (Deutscher
    Wetterdienst, DWD).
      - read.DWDstations() fetches information about available DWD
        stations

Major Changes

  - renamed arguments in vegperiod() to clarify meaning / easier tab
    completion:
      - first.avg -> est.prev
      - temp.sum -> Tsum.out
      - method.start -> start.method
      - method.end -> end.method
      - renamed method StdClimatolgy to StdMeteo / ETCCDI in vegperiod()
        and brought calculations into compliance with ETCCDI standard

Bug fixes and minor improvements

  - added a hack in method LWF-BROOK90 of vegperiod() to adjust for
    different arithmetic precision in VBA version (thanks to Paul
    Schmidt-Walter for providing climate.in files for comparision and
    help finding the bug)
      - fixed bug leading to crash of vegperiod() if argument
        first.avg=0 (thanks to Ronald Bialozyt for reporting)
      - the argument "dates" of vegperiod() accepts now also character
        strings understood by as.Date()
      - rewrote help-page of vegperiod() and added references for all
        methods

                        Changes in version 0.1.0                        

  - Intial version