:sparkles: Change IO Error Distribution! (Please)

[JumperBot]

Is your feature request related to a problem? Please describe.
a program dying out of nowhere without the programmer knowing is not good.

Describe the solution you'd like

• Instead Of Throwing A SIGTERM, Why Not Write An Error Code Instead?
• Edit Wiki To Include Breaking Changes

Additional context
Probable error codes:

Code	Meaning
0	Everything's Fine
1	File Not Found
2	Not A File
3	No Permission To Access Filesystem
4	Storage Full / FS Quota Exceeded / ...
5	No Idea, User Intervention?