CHANGES IN VERSION 3.2.2
-------------------------
NEW FEATURE
    o Update citations

CHANGES IN VERSION 3.2.1
-------------------------
NEW FEATURE
    o Add one citation

CHANGES IN VERSION 3.0.1
-------------------------
BUG FIXES
    o give errors when inputs of addGeneIDs is incorrect.

CHANGES IN VERSION 3.0.0
-------------------------
NEW FEATURE

     o From RangedData to Granges
     o High efficiency
     o Find Overlaps for more than 2 groups 
     o Add Utility test 
     o Add new function binOverFeature, egOrgMap.

CHANGES IN VERSION 2.17.2
------------------------
NEW FEATURE

    o add byBase for makeVennDiagram.

CHANGES IN VERSION 2.11.4
------------------------
NEW FEATURE

    o Add selection of 'shortestDistance' to output parameter of annotatePeakInBatch.


CHANGES IN VERSION 2.12.3
------------------------
BUG FIXES

    o relative postion for negative strand are not correct when call findOverlappingPeaks.

CHANGES IN VERSION 2.11.4
------------------------
NEW FEATURE

    o Add selection of 'shortestDistance' to output parameter of annotatePeakInBatch.

CHANGES IN VERSION 2.11.3
------------------------
NEW FEATURE

    o Improved efficiency of annotatePeakInBatch.

CHANGES IN VERSION 2.9.6
------------------------
BUG FIXES

    o Changed Enhancer.Silencer to intergenic.Region in assignChromosomeRegion.

CHANGES IN VERSION 2.9.5
------------------------
BUG FIXES

    o negative widths are not allowed when call findOverlappingPeaks.


NEW FEATURES IN VERSION 2.2.0
------------------------

     o Find the peaks with bi-directional promoters with summary
     statistics (peaksNearBDP).

     o Summarize the occurrence of motifs in peaks
     (summarizePatternInPeaks).

     o Add other IDs to annotated peaks or enrichedGO (addGeneIDs)The
     function makeVennDiagram supports 4-way venn diagram.

     o Enriched Gene Ontology (GO) terms are annotated with a list of
     genes which can be traced back to peaks.

     o FAQ: http://pgfe.umassmed.edu/ChIPpeakAnno/FAQ.html.

     o Summarize peak distribution over exon, intron, enhancer, proximal promoter, 5 prime UTR and 3 prime UTR (assignChromosomeRegion)