1.7.2
	* Changes to GDS2MA and GDS2eSet to deal with "null" in the GDS datatable

1.7.1
	* change made to getGEOfile to reflect new GDS location at GEO

1.7.0
	* Version bump for bioC

1.5.5
	* Added GSElimits to getGEO to allow for parsing of large datasets in pieces
	* fixed vignette to include Biobase-compliant exprSet
	* changed vignette in the GSE2eSet section to use "match" for more safely dealing with probeset ordering differences between GPLs and GSMs

1.5.4
	* Fixed GDS2eSet to be Biobase-compliant
