Update list for Paper 2 PDF

Paper 2 PDF 1.6 changelog from June 19, 2009

Support of JPEG 2000 and JBIG2 compression

Paper 2 PDF 1.0 changelog from January 19, 2008

New Release

Older Paper 2 PDF versions:

• 1.6 (Jun 19, 2009) • 1.0 (Jan 19, 2008) •