Commit 2be1e06

What's new in 8.7.0

Merge to

[upstream commit 1ad92eb35a44](https://github.com/googlei18n/libphonenumber/commit/1ad92eb35a44);

relevant code changes:

- New method `supported_calling_codes()` API to return all the calling codes

that the library considers valid, both for geographical and non-geographical

entities.

- Added `is_sms_service_for_region(numobj, region_dialing_from)` API in

short number info library. An SMS service is where the primary or only

intended usage is to receive and/or send text messages (SMSs). This includes

MMS as MMS numbers downgrade to SMS if the other party isn't MMS-capable. The

`is_sms_service` metadata is also serialized for the first time.

- Documentation update for private variables `_VALID_PUNCTUATION` and

`_SINGLE_INTERNATIONAL_PREFIX`, also renaming the latter from

`_UNIQUE_INTERNATIONAL_PREFIX`.