OPT code based on MVVM arch

v3.0

OPT code based on MVVM arch

Fix some bugs

v2.2

OPT some code & FIX bug that may cause crash

Support General & Drag pasteboard

v2.1

ADD support for drag board

Major changes: upgrades the interface and supports query of history

v2.0

UPDATE readme

Fix some bugs and add Quick Look

v1.1

UPDATE project setting

First available version

v1.0

ADD basic code for the project