v1.2.0

• BREAKING: Use 3D array to represent pixel data. It is not necessary to flatten() numpy array before passing into create_frame_from_*() and add_frame_from_*()
• Fix create_frame_from_rgb()
• Add create_frame_from_rgb_trns()
• Auto determine width, height, mode for add_frame_from_numpy() based on shape of numpy_data
• Fix stub generation
• Fix type hints
• Fix docstring punctuations
• Place scripts in same dir