Changelog
4e89223 build: update version to v8.5.2
75d6bf9 Merge pull request #202 from suzuki-shunsuke/fix/fix-parse-error-of-field_spec
531e160 docs: update an example
880866b fix: make Event Definition's notification_settings required
7eab804 fix: set default value to Event Definition's field_spec
f362542 refactor: add a function wrapValidateFunc
551b144 docs: add an example
e64e04d refactor: rename a function and move it to util.go
67d3f7d fix: fix the parse error of Event Definition's notification_settings
946e9cb fix: fix the parse error of Event Definition's field_spec