menambahkan tugas 5 (Squence diagram)
revisi tugas 5
Merge branch 'master' of https://github.com/HerryEffendy19/IF-C-Kelompok-21 into ridwan
Merge pull request #2 from HerryEffendy19/ridwan

Ridwan
mengedit collaboration diagram
Merge branch 'master' of https://github.com/HerryEffendy19/IF-C-Kelompok-21