improvement: check file change date/hash and only reload if changed

[laundmo]

stat the file, or compare to previous hash, to only reload the code when changes occured.

[s39674]

Hi @laundmo, I don't see why would you use reloading for that. You could just use a timer that every so often check the file's hash and if that changed it execute the code.

[laundmo]

to clarify: i meant to only reload if the file has changed, not to run the code on a timer.

this is so that reloading has the performance impact of just a single stat, instead of "reloading" even if the file has no changes.