init v2.2.3
updated READMEs (dev notes)
ren googlebooks to goob
close 2.2.3 (NOT RELEASED)
init v2.3.1
better fmt in __iter__
mapper as @staticmethod
__unicode__
updated CHANGES.txt
ordered fields in __iter__ and __unicode__
updated CHANGES.txt
updated READMEs (dev notes)
ren canonical to value
updated READMEs
updated PKG-INFO
release 2.3.1