Sergey

## Problem statement There is no sense to evaluate nodes if their work can't be detected by user. For example on the next picture evaluation of first group of nodes...

## Problem statement I guess angle parameter should not effect the cycle parameter.  [untitled1.zip](https://github.com/nortikin/sverchok/files/6993310/untitled1.zip)

## Addressed problem description Closes #4226 1. Get json from the sverchok/json_examples folder if there is json with the same name in sverchok/tests/expected_tree_data folder 2. Import json into a new...

Modifying Blender data with nodes

7

## Problem statement There is a problem and its source is that nodes does not copy Blender data before its modifying as it is been done with regular Python data....

Sverchok data structure

10

Sverchok has fixed data structure: `[object 1, object 2, ..., object N]` Possible type of objects: - Matrix - bpy.data.object - Quaternion - list of values Possible type of values...

Projection_Decomposition.json

6

## Problem statement Examples -> Fields -> Projection_Decomposition Some return values of the `Apply vector field` node are `Nan`. And also there is the warning: ```py 2021-07-23 14:36:07,064 [WARNING] py.warnings:...

## Problem statement There is a problem that old layouts start to give different results after a while with new Sverchok versions. I see several ways to handle this: -...

## Problem statement Add tests on Blender without installed dependencies. There was case when Sverchok worked differently and existent tests did not catch it.

Fix list levels node

1

## Addressed problem description Fixes #4184 ## Preflight checklist - [ ] Code changes complete.

## Problem statement With the same input the output of the node is not persistent. When the shape of input data is changed the node can forgot about it's settings...