Sorting issues

[butuzov]

Is your feature request related to a problem? Please describe.
It would be great to have sorted results by file/line/column. In case of similar checks, we can track issue as a group (see similarities in unused and deadcode example ), in case of different issues its can be useful to see what else linter found on/around same lines.

Describe the solution you'd like
Implement sort flag into the output config structure.

Additional context

Here is an example of the output without sorting (it's a little bit cut, but you got the idea).

main.go:19:6: `deadcode` is unused (deadcode)
main.go:10:2: S1021: should merge variable declaration with assignment on next line (gosimple)
main.go:19:6: func `deadcode` is unused (unused)

Here is an example of the output with sorting.

main.go:10:2: S1021: should merge variable declaration with assignment on next line (gosimple)
main.go:19:6: `deadcode` is unused (deadcode)
main.go:19:6: func `deadcode` is unused (unused)

[boring-cyborg]

Hey, thank you for opening your first Issue ! 🙂 If you would like to contribute we have a guide for contributors.

[butuzov]

If everything OK, I can add documentation and examples (once figure out how to do that).