* src/main/java/jgreg/internship/nii/WF/Pipeline.java: Refactoring (WIP)
* src/main/java/jgreg/internship/nii/AE/SentimentStatisticsAE.java: Implement strategies
* src/main/java/jgreg/internship/nii/App.java,
* src/main/java/jgreg/internship/nii/WF/Pipeline.java: Refactoring continue (WIP)
* src/main/java/jgreg/internship/nii/RES/StringListRES.java: New resource to share List of String between AE
* src/main/java/jgreg/internship/nii/App.java,
* src/main/java/jgreg/internship/nii/WF/Pipeline.java: Refactoring continue (WIP)
* src/main/java/jgreg/internship/nii/RES/StringListRES.java (getList): New function
* src/main/java/jgreg/internship/nii/CR/PubMedReaderCR.java: Fix docIndex and use the new Resource
* src/main/java/jgreg/internship/nii/WF/Pipeline.java: Refactoring continue (WIP)
* src/main/java/jgreg/internship/nii/AE/PubMedXMIWriter.java: New option to clear the output directory
* src/main/java/jgreg/internship/nii/AE/CitationContextExtractorAE.java: New option to focus on some Citation instead of looking at every citations
* src/main/java/jgreg/internship/nii/WF/Pipeline.java: Refactoring continue (WIP)
* src/main/java/jgreg/internship/nii/AE/PubMedXMIWriter.java: Add comment
* src/main/java/jgreg/internship/nii/RES/StringListRES.java: Filter out
commented line _before_ trimming

This way I don't have to implement an escaping mechanism. If a string has to start with a '#', just put a space before it.