Make `Force` a configurable option

[bitcapybara]

Hi, Is it possible to make Force at line 184 in the file ssdeep.go a configurable option? Sometimes I need to handle some slightly shorter input but now this behavior throws the error ErrFileTooSmall.

I prefer this:

input := "hello, world"
hash := ssdeep.FuzzyBytes([]byte(input), true /** force continue **/)

Or is there any better way to handle this situation?

[bitcapybara]

My mistake, Force is a global variable that can be changed