* Improve newtoki extension.
* Optimize a Id detection.
* Specify the filter default settings.
* Add Rate Limit Period Pref.
* Fix mistake about range. and default value.
* Fix bug about setDefaultValue, And pref description.
* fix bugs.
* More follow default variable.
* lazy init to rateLimitedClient as it required to access preference.
* bump up version to v1.2.21
* Follow the defaultRateLimitPeriod on load pref function
* Trying to fixes#5657 as sub string baseUrl when failed to parse uri.
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