note for releasing

Change a version number in Assets/SceneViewFovControl/Editor/Settings.cs

        namespace UTJ.UnityEditor.Extension.SceneViewFovControl {
            static class Settings {
                ...
>               public const string VersionString = "0.1.x";
                ...

Push changes to the repository at GitHub.
Create a .unitypackage
- Select "Assets > Make SceneViewFovControl.unitypackage"
- SceneViewFovControl.unitypackage will be put in root directory of the Unity Project.
Upload .unitypackage via "Draft Release" page at GitHub.
- Also add tag in the "Draft Release" page
Change release URL in README.md, README.en.md and README.ja.md

        ## How to use

>       - Import [this .unitypackage](https://github.com/t-mat/UnitySceneViewFovControl/releases/download/0.1.6/SceneViewFovControl.unitypackage) to your Unity project.

        ## 使い方

>       - [この .unitypackage](https://github.com/t-mat/UnitySceneViewFovControl/releases/download/0.1.6/SceneViewFovControl.unitypackage) を Unity プロジェクトにインポートします

Push changes to thre repository at GitHub again.