. Added the DateTime::createFromImmutable() method, which mirrors
DateTimeImmutable::createFromMutable().
+Intl:
+ . Added void Spoofchecker::setRestrictionLevel(int $level) method, available
+ when linked with ICU >= 58.1. Levels are represented as class constants
+ - Spoofchecker::ASCII
+ - Spoofchecker::HIGHLY_RESTRICTIVE
+ - Spoofchecker::MODERATELY_RESTRICTIVE
+ - Spoofchecker::MINIMALLY_RESTRICTIVE
+ - Spoofchecker::UNRESTRICTIVE
+ - Spoofchecker::SINGLE_SCRIPT_RESTRICTIVE
+ For the detailed documentation on the restriction levels, see
+ URestrictionLevel under
+ http://icu-project.org/apiref/icu4c/uspoof_8h.html
+
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7. New Classes and Interfaces
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