Prep for 7.7.2 release
Merge code changes from upstream 7.7.1 Also sync shortnumberinfo.py more closely with upstream ShortNumberInfo.java and friends (cf. commit 2f3fd02).
Don't propagate the special -1 value for possible_length
Fix generated metadata -- sorted possible_length
Prep for 7.6.0 release
Prep for 7.5.2 release
Prep for 7.5.1 release
Prep for 7.5.0 release
Update example test to match current metadata
Prep for 7.4.4 release