Bump version v0.0.6

- This upgrade the dependencies package version
- Introduce new exported PictureInsertType enumeration

Bump version v0.0.4

- This upgrade the develop dependencies package version
- Update README and function signature for breaking changes in Excelize v2.8.0
- Removed exported `ChartTitle` data type, and using the `RichTextRun` data type instead of it

Bump version v0.0.3

- Upgrade the Excelize to the v2.7.1
- New function `GetDocProps` has been added

Bump version 0.0.2

This add GitHub Action for unit test and bump version (#1)