Local russian numbers detections and tests

[dapi]

No description provided.

[dapi]

There is no reason to cache regexp, because creation of it is very cheap

[elskwid]

Hi @dapi! Thank you for your pull request. I want 1.3 backwards compatible for the most part with the 1.2.x. The change to country detection breaks old code that relies on the code regexp.

# from this:
if string =~ country.country_code_regexp
# to this:
if string =~ country.country_detect_regexp

How about using the new country_detect_regexp if it exists and otherwise falling back to the country_code_regexp? That way we don't break any expectations. Would also be great to have the README updated about the new detect functionality.

Thanks again.