Maarten Breddels

We should save the (minimal) widget state in the notebook file by default

7

### Problem People just want to save a notebook with widgets, and the state should be embedded, they by default should not have to worry about saving the widget state,...

setLayout before attaching to DOM

15

Currently, we wait till the DOMWidgetView object is displayed (i.e. attached to DOM), before we set the layout: https://github.com/jupyter-widgets/ipywidgets/blob/92d7d42c00a1b0d9ce921533acb08beefdea3eb2/packages/base/src/widget.ts#L810 This originally comes from this commit: https://github.com/jupyter-widgets/ipywidgets/commit/9c3de0980968f42ce92feddc6c00dbeb01dd41a5 However, this leads to...

Benchmark results will come in a referring PR

speed up setting attributes

1

Setting an attribute on a trait is slow, because we always trigger callbacks, even when they are not there. This speeds it up by 3x. Before: ``` ------------------------------------------------- benchmark: 1...

perf: speedup date parsing using ciso8601

6

This is a cutout of running the profiler on voila, where it handles a single comm msg:  As can be seen, the green 'parse_date' is a significant part of...

Feature: fork kernel

1

Feature needed for referenced PR to ipykernel + test script

## Description ipyvuetify widgets do no render in the vuetify-base template when there is a VBox in between. ## Reproduce The following code snippets show what does render, and what...

Clipping issue

1

This screenshot shows two issues: * One bqplot, which has positive z-index (will need to be solved in bqplot) * The thumb-handle is clipped, this is something we could fix...

Updates to KeyframeTrack do not effect the AnimationAction

8

Starting from [this example](http://pythreejs.readthedocs.io/en/latest/examples/Animation.html) and afterwards executing this: ``` positon_track.values = [100, 6, 100, 6.3, 3.78, 6.3, -2.98, 0.84, 9.2, ] ``` will not lead to different positions in the...