Patch Notes: v1.2.1

Patch notes v1.2 → v1.2.1:

Enhanced modules, improved usability, fixed some bugs.

• Added a `DateTime.sleep(...)` function
  
• Added a vsync option
  
• Added an option to customize the splash image for HTML build
  
• Added an option to disable the boot sound
  
• Added a "position" option to the `Application.setOption(...)` function
  
• Added a "display_index" option to the `Application.setOption(...)` function
  
• Fixed a cursor location issue of the `bytes:resize(...)` function
  
• Fixed a canvas scaling issue under edit mode