Log Message:
ruby-diva: update to 2.0.1.

Upstream changes:

2.0.1
* float type field can be used for Diva::Model subclass
* InvalidTypedError message shows class names
* fallback to Time.parse if strings passed to time field is not ISO8601

2.0.0
Incompatiple changes
* obsolete Diva::Model#to_hash, renamed to to_h
* drop Ruby 2.6 support
Other changes
* Pattern Matching of Diva::Model instance by Hash Pattern