2.22.2
[bugfix] Avoid using trim() (#4564)
FFS
Use isFunction instead of instanceof Function
[bugfix] Fix #3883 lazy load parentLocale in defineLocale, fallback to global if missing (#4310)
[bugfix] Fix #4390: use offset properly in toISOString (#4391)
[bugfix] Fix incorrect strict parsing with full-width parentheses (#4240)
[bugfix] Treat periods as periods, not regex-anything period, for weekday parsing in strict mode. (#4453)
Use getOwnPropertyNames to check for empty object.