Changes in CCAGFA version 1.0.4

  o Advanced hierarhical low-rank ARD prior
  o Options to prune empty factors during training and reduce memory
  o Improved efficiency

Changes in CCAGFA version 1.0.3

  o Corrected citation page numbers

Changes in CCAGFA version 1.0.2

  o Improved documentation

Changes in CCAGFA version 1.0.1

  o Fixed a bug in computing datavar in GFA()
