[Feature request]: Rerun previously run code

_This is related to #56 but not the same_

**Is your feature request related to a problem? Please describe.**
If I have to rerun the same code (after making a few tweaks), I have to select the same lines of code again and again.

**Describe the solution you'd like**
I wish there was a command `Run the previously selected code`. This command would try to recognize which lines need to be run and run it.
- If the user selects code from line X to the end, then run code from line X to the end
- Same goes for if user selects from top to line X
- If the user selects code from line X to line Y, then rerun line X to line Y