Huge feature (200+ commits from different developers). It completely changes layout of data (please expect very long DB migration process if you have a lot of tasks). The primary idea is to send data as zip chunks (e.g. 36 images in one chunk) or encoded video chunks and decode them on the client side. It helps to solve the problem with latency when you try to view a separate frame in the UI quickly (play mode).
Another important feature of the patch is to provide access to the original images. Thus for annotations the client uses compressed chunks but if you want to export a dataset Datumaro will use original chunks (but video will be decoded with original quality and encoded with maximum/optimal quality in any case).
* Disabled tracks for polyshapes in UI
* RectDrawingMethod enum pushed to cvat-canvas, fixed some code issues
* Optional arguments
* Draw a text for locked shapes, some fixes with not keyframe shapes
* Fixed zooming & batch grouping
* Reset zoom for tasks with images
* Fixed putting shapes out of canvas
* Fixed grid opacity, little refactoring of componentDidUpdate in canvas-wrapper component
* Fixed corner cases for drawing
* Fixed putting shapes out of canvas
* Improved drawing
* Removed extra event handler
* Minimized size of an element in side panel
* To background / to foreground like in legacy UI
* Added color changer for a shape
* Adjusted color updating
* Drawn z-order switcher
* Z layer was added to state
* Added ZLayer API method cvat-canvas
* Added sorting by Z
* Displaying points in top
* Removed old code
* Improved sort function
* Drawn a couple of icons
* Send to foreground / send to background
* Updated unit tests
* Added unit tests for filter parser
* Removed extra code
* Updated README.md
* Annotation menu, modified tasks menu
* Removed extra styles
* Context menu using side panel
* Mousewheel on draw
* Added more cursor icons
* Do not check .svg & .scss by eslint