Merge pull request #28 from DustInMonteriggioni/master

Master into LC
Still still uncommitted chagnes
Modify display()s, filter & sort tested
Merge remote-tracking branch 'origin/master'
The testing to data_center finished, hope so~
Merge pull request #30 from DustInMonteriggioni/Branch-chyb

The testing to data_center finished, hope so~
Modify BbkType.Sketch
Merge pull request #31 from DustInMonteriggioni/Branch-chyb

Modify BbkType.Sketch
backout
Try to solve conflict
Merge pull request #33 from DustInMonteriggioni/LC

Lc
Unit test documentation finished... Oh some other modifications~
Merge pull request #34 from DustInMonteriggioni/Branch-chyb

Unit test documentation finished... Oh some other modifications~
Try to solve conflicts