update author retrieval: return fewer information

version 1.0.3a1

add serial title support; version name 1.0.2 instead 1.0.1 because of…

… conflict

bug for affiliation

updpate readme

official version for Python 3: 0.9.0

0.9.0rc2 fix bugs

0.8rc5, with compatibility for Python 3.6

__init__ change version and README.rst updated