Add Operation and OperationQueue class
This is the final commit to support Operation and OperationQueue class:
commit 112acbd6dd4647911bf43ec22b1a38639e042359 (HEAD -> master, origin/master, origin/HEAD) Author: Steel Wheels Project <wheel@tcn.zaq.ne.jp> Date: Sun Mar 10 19:38:42 2019 +0900 KiwiLibrary: Reallocate value when importing and exporting parameters
Add Operation and OperationQueue classes for JavaScript. They are used to execute JavaScript code on the thread.