[Feature request] `f-newer-p` and `f-older-p`

[rileyrg]

Any chance of a "newer" function? ie (if (f-newer fileA fileB) ) ... fileA is newer than fileB...

[Phundrak]

I think this would be a nice addition to f. f-newer-p could also be accompanied by f-older-p, though the person implementing it should be wary not to define one as being the opposite of the other, two files could be created at the same time.