Bump version to 2.7.2

Bump version to 2.7.1

Bump version to 2.7.0

Bump version to 2.6.2

Bump version to 2.6.1

Bump version to 2.6.0

**New**

- Add classes to specify image location
- Add image caption support

**Improved**

- Add Docker support to tools scripts
- Add multi-config option to build tool
- Upgrade GA tag to latest version
- Using `yq` to parse YAML in tool scripts
- Upgrade web-fonts source
- Regular layout optimization

**Fixed**

- The copy link button of the posts is invalid
- Fix the compatibility of `fswatch` under Linux