v1.2.0
1. Fixed known bugs.
2. Updated the project structure.
3. Added C++/Qt code for each demo.
4. Adapted to high resolution screen. Thank @panhaovue for the tip.


v1.1.5
1. Fixed icon size.
2. Made window resizable.
3. Added exe for users without Python environment.


v1.1.4
1. Added 1 style demo and 2 func demos for QTableWidget.
2. Enriched widget choices in QSS Editor.
3. Optimized suppress_stdout_stderr() in output.py.
4. Eliminate the framework's QSS effect (e.g. QScrollBar's QSS effect) on demos.


v1.1.3
1. Added 1 func demo for QLineEdit.
2. Added 1 func demo for QWidget.
3. Added a sponsor part.
4. Fixed a crash problem.


v1.1.2
1. Added 1 style demo for QListWidget.
2. Added 1 style demo for QPushButton.
3. Added new version release notice.
4. Fixed known issues of QSS Editor.


v1.1.1
1. Added 1 func demo for QLabel.
2. Added 1 style demo for QPushButton.
3. Added 1 style demo and 1 func demo for QListWidget.
4. Fixed crash problem when showing QDial, QProgress and QPushButton style demos.


v1.1.0
1. Added QSS Editor.
2. Added 2 style demos and 1 func demo for QWidget.


v1.0.0
1. Added 4 style demos and 2 func demos for QCheckBox.
2. Added 3 style demos and 2 func demos for QComboBox.
3. Added 3 style demos and 1 func demo for QDial.
4. Added 4 style demos and 6 func demos for QLabel.
5. Added 5 style demos and 3 func demos for QLCDNumber.
6. Added 7 style demos and 4 func demos for QLineEdit.
7. Added 9 style demos and 2 func demos for QProgressBar.
8. Added 10 style demos and 3 func demos for QPushButton.
9. Added 5 style demos and 1 func demo for QSlider.
10. Added 1 style demo and 1 func demo for QSpinBox.
11. Added two themes: white and black.