tuning: Revise .magnet files, and revert MagnetRONFrame#open(). #45

Merged n-nitta merged 2 commits into nitta-lab:master from nitta-lab:tuning on 30 Dec 2020

2020-12-29	548e7e2 Browse files » Revise delta extract type of tiny problems. Aki Hongo committed on 29 Dec 2020
2020-12-29	b966340 Browse files » Revise .magnet files. ... Reset MagnetRONFrame#open(), MagnetRONViewer#updateObjectVertices(). Aki Hongo committed on 29 Dec 2020