Changes in version 0.5-4 (2026-01-27)                  

    o   Modified the documentation for FragmentPeptide.

    o   Cleaned up citations for isotopic masses.

                 Changes in version 0.5-2 (2017-08-12)                  

    o   Added print.alignment and print.graphic arguments to
	SpectrumSimilarity, providing options to generate these
	outputs. Added x.threshold argument to SepectrumSimilarity to
	exclude a lower portion of the spectrum from the similarity
	score calculation.

    o   Added output.list argument to SpectrumSimilarity, providing the
	option to return the similarity score, alignment dataframe, and
	plot in a list (thanks to M. Witting). In this case the plot is
	a grid graphics object.

    o   Added remove.placeholders argument to ReadMSPFile and
	ReadMSPDirectory to optionally remove zero intensity peaks from
	the resulting data frame.

    o   Included iodine in ListFormula and MolecularWeight (thanks to
	G. Getzinger).

    o   Fixed error in PeptideSpectrum. If only one fragment ion match
	was made, the function stopped with an error when annotating
	the spectrum (thanks to H. Kim).

                 Changes in version 0.4-6 (2016-10-19)                  

    o   Added example to WriteMspFile.Rd.

                 Changes in version 0.4-4 (2014-05-23)                  

    o   Fixed error in ConvertPeptide. When output = "elements", the
	resulting element list did not include the additon of water.
	This caused the mass calculated by, for example,
	MonoisotopicMass(ConvertPeptide("SEQENCE")) to be incorrect.

                        Changes in version 0.4-2                        

    o   Vingette changed to R Markdown format and complied using knitr.

                  Changes in version 0.4 (2013-10-06)                   

    o   Added trypsin.strict option to Digest function (thanks to S.
	Michalik).

                       Changes in version 0.3-18                        

    o   Function Digest fixed. It now correctly determines peptide
	sequences when the number of missed cleavages is > 1 (thanks to
	S. Michalik).

                       Changes in version 0.3-11                        

    o   R >= 2.14.1 required due to changes in the vignette file
	structure.

                        Changes in version 0.3-8                        

    o   Function ReadMspFile added.

                        Changes in version 0.3-6                        

    o   Function ConvertConcentration added.

                        Changes in version 0.3-2                        

    o   Warning message in ListFormula modified to include the
	elemental formula (helps in tracking down the source of the
	warning when called multiple times within another function).

                        Changes in version 0.3-1                        

    o   NEWS file started.