[progress] update progress to 80
Merge branch 'develop' into copy
[progress] create library file.
Merge branch 'develop' into copy
[progress] rewrite readme in progress.
[progress] complete re-design.
[progress] update progress to 55
Merge branch 'develop' into copy
Merge branch 'develop' into copy
Merge branch 'copy' into develop
update progress of task copy to 100