Qtbox

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

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.

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

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.

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.

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