Feature request: open file at position supports negative index

[kismonguz]

It would be nice if the line and column position supports the negative numbers and start counting from the end of the file.

Example:

We have a readme.md file filled with 20 lines.

edit readme.md:10 - opens the file at line 10
edit readme.md:-1 - opens the file at the last row
edit readme.md:-5 - opens the file at line 16