If file does not exist, create it (No Prompt)

[oxinabox]

This removes the prompt before creating reference files.

I have wanted this for a while, because when creating dozens (or hundreds) of reference files, I don't want to sit there hammering "yes".
This also means if I need to regenerate everything, I can delete my reference folder and rerun my tests.

I tend to do almost all my review of reference files during code-review rather than in the terminal.

I think this is a better behavour, but In theory someone could be relying on this to make sure that files were not created by mistake, e.g. by looking at the filename, not just the content.

So I bumped this as a breaking change, just incase.
Its not really an API change, as much as a UI change.
Maybe I should only do a nonbreaking verion bump?

[johnnychen94]

Yeah, this change also makes some test cases possible in CI environment.

Perhaps we can make similar changes for reference updates but raise a @warn instead of @info (Oh no we can't because this would break the test pipeline and gives a fake green check even if some reference doesn't match.)

[coveralls]

Coverage increased (+4.2%) to 89.516% when pulling 6791818 on ox/noprompttocreate into ffbfb29 on master.