bump up version

Merge branch 'master' into edit-master

add changelog comment for version 1.0.0 .

bump up version number and update change log .

bump up version number to 0.96 . update change log .

update copyright and bump up version .

add const of egg-version

add const of egg-version .

remote unserconstruction comment

fixed version number 0.26 to 0.91

many fixes reported by users

lot of cleanup and documentation