CHANGES IN VERSION 1.1.5
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=> add citations for xtail.
=> add summary() function
=> add resultsTable() function
=> add write.xtail() function
=> add plotFCs() function
=> add plotRs() function
=> add volcanoPlot() function

CHANGES IN VERSION 1.1.4
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=> support for different number of replicates in each condition.


CHANGES IN VERSION 1.1.3
************************
------------------------
=> add credible interval.
=> bug fixed, see issues #2.
=> official version

