CHANGES IN VERSION 1.0.1
------------------------
 o change dependency for igraph to igraph0, 
   since igraph's next release is not backwards compatible <2012-05-09, Wed>
 o fixed examples in geneID2Name.Rd <2012-05-22, Tue>   
   
CHANGES IN VERSION 0.99.0
------------------------
 o change package name to ReactomePA, for there is already an RPA package. <2012-03-02, Fri>
 o Vignette issues:  <2012-03-02, Fri>
   	    change image format from .eps to .pdf, make it easier to build.
	    remove the tolatex tag of sessionInfo(), make the output more readble.
 o re-implement geneID2Name using select method. <2012-03-02, Fri>
 o add examples in man pages. <2012-03-02, Fri>
 o remove man pages of internal functions. <2012-03-02, Fri>
 o import plot summary from stats4, for BiocGenerics (version 0.1.10) removed them <2012-03-03, Sat> 

CHANGES IN VERSION 0.2.3
------------------------
 o @exportMethod plot <2012-02-15 Wed>
 o fix bug when calling summary method from plot,
   for summary defined in base is S3 method,
   instead import summary generic from stats4 <2012-02-15 Wed>

CHANGES IN VERSION 0.2.2
------------------------
 o remove generic definition of show, summary and plot, add NAMESPACE import show
   from methods and plot from graphics. summary need not to import, for is defined
   in the base package  <2012-02-10 Fri>

CHANGES IN VERSION 0.2.1
------------------------
 o update vignette <2012-02-09 Thu>
 o add sample data (an example list of genes from ProfCom:
   http://webclu.bio.wzw.tum.de/profcom/gene_Lists/example1.txt
   the gene symbols were converted to entrezgene) <2012-02-09 Thu>

CHANGES IN VERSION 0.2.0
------------------------
 o separate codes of mapping pathway ID to pathway Name to a new function pathID2Name <2012-02-09 Thu>
 o implement geneID2Name function for mapping gene ID to gene Symbol <2012-02-09 Thu>
 o add parameter readable in function enrichPathway <2012-02-09 Thu>
 o implement cnetplot for plotting category net <2012-02-09 Thu>
 o modify plot function for class enrichPathwayResult to use cnetplot <2012-02-09 Thu>

CHANGES IN VERSION 0.1.1
------------------------
 o add vignette <2012-02-08 Wed>
 o bug fixed for multiple mapping of pathway ID to pathway Name
   such as pathway 162906 can mapping to 1629061
   and 1629062 when getting pathway name, remain the first one. <2012-02-08 Wed>

 CHANGES IN VERSION 0.1.0
------------------------
 o implement show, summary and plot method for enrichPathwayResult class <2012-02-08 Wed>
 o define class enrichPathwayResult to store result of enrichPathway <2012-02-08 Wed>
 o implement enrichPathway function for enrichment analysis.
   using hypergeometric model <2012-02-08 Wed>
 o initial package skeleton <2012-02-08 Wed>