Ignore binaries

[matryer]

It currently searches inside binaries too, madness. Stop it.

[tylerstillwater]

Detecting if something is a binary executable is difficult, especially in a cross-platform compatible way. I'd recommend having a whitelist of extensions that are searched. This is a tool meant for code and coders, so we can search known code file extensions only.

Alternatively, we could not search a file if it is over a certain size limit.