Cleaned up JS_dismat in linalg.py
KL_divergence accepts 2-dim array as an input
KL_divergence support in sim_top_word
KL or JS_divergence  support in sim_* in similarity.py
KL or JS_divergence support in ldagibbsviewer.py
minor fixes
posterior calculation in sim_top_doc
sim_top_doc in similarity.py now accept posterior calculation
minor fix at sim_top_doc
minor fix at sim_top_doc
KL_divergence and row_normalize accepts sum normalization
JS_dismat support in LDAgibbsviewer(but extremely slow)
Bugfixes in JS_dismat
bugfix in JS_dismat
isomap functions accept JSD
bugfix in cluster_topics
bugfix in isomap functions
documentations and name changes on JDS
bugfix linalg.py
bugfix in sim functions