Attribute Changer

What's new in this version:

New:
- Improved UI on high-DPI displays
- Export content to video (MP4, WebM, MKV)
- Preset effects and text animations
- Tools for drawing and editing freeform shapes
- Line drawing animation
- Morphing animation
- Elements can show across multiple scenes
- Custom elements from HTML/CSS/JavaScript
- Support embedding HTML folders or packages into HTML widgets
- Image elements support img tags and inline SVG images
- Custom line dashes, line join types, line cap types for shapes and freeforms

Enhancements:
- Resize multiple selected elements on Canvas proportionally
- Scale multiple selected animation segments on Timeline proportionally
- Search elements and animations in Timeline and Elements pane
- Copy/paste/delete elements in Timeline
- Ignore mouse and touch events on non-painted areas of elements
- Option to fit a symbol to its content
- Class names for scenes
- Keyframes for changing element text content
- Allow converting built-in shapes to freeforms for editing
- Allow creating keyframes automatically within a predefined time range
- Preview a project in only one browser tab
- Copy/paste SVG paths from vector graphic editors as freeforms
- Copy/paste and drag/drop images from other applications
- Create motion path animations from shape paths of elements on Canvas
- Create freeform shapes from motion path animations
- Lots of other minor improvements

Bugs Fixed:
- Some minor bugs fixed