isValidNumber now returns null value when utils script is not available

[slavafomin]

Fixes #362.

[jackocnr]

Thanks!

[slavafomin]

My pleasure. Will you be able to release this change in the new version soon? 7.1.2 I believe.

[jackocnr]

Actually v8.0.1. Done.

[slavafomin]

Oh, I would really want to use autoFormat feature. This is probably the most important thing in the whole library for us. It works pretty great with international phone numbers in our locality. Are you planning to completely drop support for this feature?

I'm going to stick with the 7.x branch for now then. Could you please merge this change into this branch as well?

[jackocnr]

I feel your pain, but unfortunately I had to remove autoFormat because it is fundamentally broken for 49 countries including USA. See a full list here: #346 (comment). If you want your site to work for people from those countries, then you shouldn't use autoFormat.

If you still choose to, you can continue to use v7 of the plugin, but I will not be maintaining it.