Patch Notes: v0.8.1 beta

Patch notes v0.8 beta → v0.8.1 beta:

Improved usability, fixed some bugs, and finished the manual.

• Added a context menu for the assets window
  
• Added tooltips for some unobvious operations
  
• Added detailed font customization by config
  
• Changed `bytes:readBytes(...)`, `file:readBytes(...)`, the results' cursor will be at the end
  
• Fixed a variable value inspecting bug with the debugger
  
• Fixed a bug of `fileInfo:empty()`
  
• Fixed a `Bytes` filling bug with `Network`
  
• Fixed an unexpected key event bug eg. with LAlt+A
  
• Fixed some minor bugs in the examples
  
• Improved the behaviour when open project with pending changes
  
• Finished the first version of the reference manual