Option to ignore really large files

[davidlaym]

I'm having problems with a not-so-much large data JSON file that I need to have in the repo, and it's somewhat frequently updated, but being as large as 12MB, it depletes all the memory when precise-commits parses it and it crashes.

I like to have my JSON files linted and checked, but I would like to ignore really large files like this one if possible, maybe with a custom threshold
something like --ignore-size 10MB