Release v1.1.1

- Remove useless files into repo
- BugFix:
  - {ready###} message may not output on stdErr when exiftool warning appears

Release v1.1.0

- Class Interface changes
  - Change constructor call
  - Remove setProgram() function
  - Modify cmdCompleted arguments order
  - Change cmdId type : cmdId is now quint32
- Improve internal code and memory usage
- Reorganize the repository
- Remove Qt 5.x support (end of life)

Release v1.0.0

First version of ZExifToolProcess with three examples:
- Example 1: List various exiftool capabilities
- Example 2: Get metadata from a file as JSON format
- Example 3: Read or write metadata from files