Hot Code Reloading viability for Jupyter-Notebook like Nim IDE

[termer]

Does the stdlib HCR work at all? I tested the program in the 
[docs](https://nim-lang.org/docs/hcr.html) (making sure that the logic was in a 
separate file), and on 2.0.2 and 2.0.4 it produced bad codegen. On 1.16.14 it 
compiled, but it didn't actually work.