Changes in version 1.3.2 (2016-07-21)                  

    o   Added tests for numeric values in arguments, fixing Issue #7 (https://github.com/ljvillanueva/soundecology/issues/7).

                 Changes in version 1.3.1 (2015-12-30)                  

    o   Added the results for the ACI by minute to the returned list in acoustic_complexity().

    o   Added a vignette to compare the ACI results between soundecology and seewave.

    o   Added the argument min_freq to acoustic_complexity().

                  Changes in version 1.3 (2015-05-02)                   

    o   Added the results for anthrophony and biophony to the results of ndsi().

    o   Fixed an error in the manual of ndsi where it said 'left' instead of 'right'.

                  Changes in version 1.2 (2015-01-12)                   

    o   Added arguments to multiple_sounds() to specify the range of time in the file to use for analysis. Fixing Issue #2.

                 Changes in version 1.1.1 (2014-04-14)                  

    o   Changing the import of functions from tuneR and seewave to avoid a clash between functions with similar names.

                  Changes in version 1.1 (2013-11-25)                   

    o   Added a new function, measure_signals(), to select signals from spectrograms.

    o   Added a new function, sound_raster(), to save spectrograms as ASCII raster files for GIS software.

    o   The function ndsi() was rewritten to avoid the problem R has with for loops. Now the function subsets the data in 1-second segments and feeds the data to pwelch() using apply, reducing execution time significantly.

    o   The function acoustic_evenness() was incorrectly named acoustic_eveness() in version 1.0. This has been fixed.

    o   Fixed a bug in multiple_sounds() where the data was not appended to the results file correctly. This problem seems to have happened only in Windows.

    o   Other small bug fixes and typos.