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Change history of ecosim package
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Changes version version 1.3-3 (20.05.2021) -> version 1.3-4 (28.08.2023)
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PR: Update of email address.


Changes version version 1.3-2 (30.04.2021) -> version 1.3-3 (20.05.2021)
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PR: Error message in calcsens if specified parameters do not exist.


Changes version version 1.3-1 (20.02.2019) -> version 1.3-2 (30.04.2021)
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PR: Error message in plotres if column with given name does not exist
    in result matrix.


Changes version 1.3 (13.02.2017) -> version 1.3-1 (20.02.2019)
==============================================================

PR: Documentation slightly improved.


Changes version 1.2 (11.02.2014) -> version 1.3 (13.02.2017)
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PR: Function "plotres" extended with many additional arguments to increase 
    the flexibility of plots. In addition, the user can now provide a single
    matrix of results, a list of matrices or a list of lists of matrices.
    The function is now compatible with the output of both functions
    "calcres" and "calcsens".

PR: Function "calcsens" for sensitivity analysis added. 


Changes version 1.01 (13.02.2013) -> version 1.2 (11.02.2014)
=============================================================

PR: Option for time-dependent parameters added.

PR: Functions randnorm and randou for uncertainty analysis added.

PR: Function "plotres" extended to plot multiple curves from list of results.


Changes version 1.0 (07.02.2013) -> version 1.01 (13.02.2013)
=============================================================

PR: Arguments "..." added to function "calcres". 
    These arguments are passed to the solver.

PR: Documentation improved.

PR: Demo examples added.

PR: plotres modified to allow for plotting even if some values are Inf, 
    NaN or NA



