Often unclear where to import from

[jlapointe]

Many code blocks throughout the documentation don't include the import statements needed for the code to work. This means that just to try out some simple "hello world" exercises, I have to dig through the git repo (or elsewhere in the documentation) to figure out where to import things from. Usually it's not too hard, but it really interrupts the flow and gets in the way of learning the tool.

To improve this, I suggest either including the necessary import statements in all examples, or adding a section to the sidebar that lists all the components that can be imported from each package.

[JozefFlakus]

Fixed in v3.0.0 docs release