Changes in version: SGPdata_5.0-0.0

  o Updated CITATION and LICENSE

Changes in version: SGPdata_4.0-0.0

  o Changed class of GRADE in sgpData_LONG to character.

Changes in version: SGPdata_3.0-0.0

  o Changed class of ID in sgpData_LONG to character.

Changes in version: SGPdata_2.0-0.0

  o Updated YEAR in sgpData_LONG.
  o Changed VALID_CASE, CONTENT_AREA, and YEAR to character from factor.
  o Updated URL in CITATION to github.


Changes in version: SGPdata_1.0-0.0

  o Package Released containing separate sgpData and sgpData_LONG data sets from SGP package.
