Changes in version 1.4.0                        

  - Add writePro function that writes a snowprofileSet to a PRO file.
      - Fixed few bugs in the snowprofile constructor that would not
        populate scalar parameters provided (e.g., ski_pen, hn24, etc)
      - snowprofilePro can now read several specific dates (before only
        all dates or one specific date)
      - snowprofilePro now (optionally, but per default) considers SH at
        surface (PRO code 0514) even if it's not a dedicated layer yet.
      - Add functionality to plot hourly timeseries in
        plot.snowprofileSet
          - This is the default now, switch to SortMethod="time_daily"
            for daily simulations and legacy behavior
          - Full flexibility remains, in particular with regard to time
            series labeling, scaling plots to visualize a continuous
            timeseries even if data sampling has a different resolution,
            etc.
          - Add new profile timeseries to demo new plotting features,
            SPtimeline_3hourly
      - Add method assignDatetags
          - Documentation updated and warnings are aggregated for
            snowprofileSet calls
      - Parse deposition date information from .pro files (as
        code 0505).
      - Add feature in snowprofilePro to read in a subset of profiles by
        their dates (instead of all or one only).
      - Update compatibility with SnowPilot (v7) caaml (v6) read
        routine.
      - Deprecate deriveDatetag

                 Changes in version 1.3.2 (2023-03-08)                  

  - Include weibull scaling and crust correction in computeRTA
      - Enfore dependency on R 4.2 (older versions break functionality)

                        Changes in version 1.3.0                        

  - Introduce a switch to compute profile summaries faster (see
    summary.snowprofile and summary.snowprofileSet)
      - Fix bug in snowprofilePRO when soil layers where present; and:
        read SK38 if present
      - Introduce function computeSLABrhogs to characterize cohesion of
        slabs (and also computeSLABrho for mean slab density)
      - Adjust method to compute burial dates of layers to align more
        closely with human interpretation. see deriveDatetag
      - Fix minor bug in findPWL: time window search ranges are now
        applied more transparent and meaningful
      - Properly define popular generics with methods for the different
        classes (see e.g., ?computeRTA, ?deriveDatetag)
      - plot.snowprofileSet
          - Introduce coloring of snowprofileSet plots according to
            stability indices with a compound color palette that allows
            identifying of index-specific classification thresholds (see
            ?plot.snowprofileSet, ?getColoursStability,
            ?getColoursPercentage)
          - add many new features for customizing snowprofileSet plots
            (e.g., emphasize specific layers, overplot timeseries with
            stability index, etc..)

                        Changes in version 1.2.0                        

  - New functions
    
      - to compute structural stability threshold sums/ lemons (i.e.,
        computeTSA, computeRTA)
      - to flexibly search for specific or generic weak layers and other
        layers of interest in the profiles (see, findPWL)
      - new and improved functionality in plot.snowprofile and
        plot.snowprofileSet

  - Restructured snowprofile object classes to better cope with top-down
    measured manual profiles that potentially have unknown total snow
    heights.
    
      - Main change: Insert mandatory snowprofile field maxObservedDepth
        and precisely distinguish that from hs.
      - The existing constructors from snowprofile and snowprofileLayers
        are set up to auto-fill the fields if possible.
      - Highlight profiles with unknown hs in plot.snowprofile, add
        TopDown = "auto"
      - include strategy to handle unobserved basal layers

  - Speed up several bottlenecks that slowed down long computations

                        Changes in version 1.1.0                        

  - v1.1.0 contains a variety of minor improvements listed below. The
    version should be free of major bugs, but several improvements are
    to be done in future versions.

  - Improvements of snowprofileCaaml:
    
      - Make routine compatible with caaml files from snowpilot.org (fix
        bugs related to bottom up profiles and workaround namespace
        issue)
      - Originally compatible with caaml files from niviz.org
      - Convert undefined grain types

  - Handle grain types that are undefined in package with
    validate_snowprofile and reformat_snowprofile

  - Enable plotting of a temperature profile that is independent of the
    snow layer grid

  - writeSmet routine for exporting smet files

  - Add object classes for snowprofileTests and
    snowprofileInstabilitySigns

  - Add new read routine for advanced csv files containing a
    comprehensive set of profile information, see
    ?snowprofileCsv_advanced.

  - Add few new field names to layer structure.

  - A deriveDatetag function calculates bdates and datetags for
    snowprofile layers.

  - A simplifyGtypes function trims unsupported IACS gtype subclasses
    into their supported main classes (e.g., PPsd --> PP)

                 Changes in version 1.0.0 (2020-07-25)                  

  - initial release of sarp.snowprofile