LDML48

Normative changes to Stable parts of the specification:

• Syntax and data model errors are now required to be prioritized over other errors (#1011)
• The Default Bidi Strategy is now required and default (#1066)
• The :offset function (previously named :math) is now available as Stable (#1073)

Normative changes to Draft parts of the specification:

• The :datetime, :date, and :time functions are updated to build on top of semantic skeletons (#1078, #1083)
• :percent is added as a new Draft function (#1094)

Editorial changes:

• The format is more clearly rebranded as "Unicode MessageFormat" (#1064)
• The pattern selection definition is refactored to be easier to understand without changing its meaning (#1080)