Support Operation and OperationQueue class
Add classes by following commit:
commit 5bc6634d0a24421af562fdab8121cd7d358fb654 Author: Steel Wheels Project <wheel@tcn.zaq.ne.jp> Date: Sat Mar 9 00:10:55 2019 +0900 KLOperation, KLOperationQueue: Update API to execute JavaScript
Supported by following commit:
commit 5bc6634d0a24421af562fdab8121cd7d358fb654 Author: Steel Wheels Project <wheel@tcn.zaq.ne.jp> Date: Sat Mar 9 00:10:55 2019 +0900 KLOperation, KLOperationQueue: Update API to execute JavaScript
Support Operation and OperationQueue class. They are used to execute JavaScript on the thread.