Backward incompatible changes in 1.0.0

As there will be a few backward-incompatible changes in AiiDA 1.0.0, let's use this page to list them so we don't forget them. Before the release we will convert them to a nice doc.

• New class names, link names, link connection rules (provenance redesign). Probably mention main changes and point to new docs.
• New way of defining CalcJobs
• conversion of is_alloy and has_vacancies to properties, change of order of parameters in arrays, change of type of symbols (and where they are stored). Check carefully also other changes in #2310 and put in a linter also the changes that are only deprecated. See also #2374
• Most of the imports have been moved. See what is the simplest way of explaining this (probably explain the new structure of the aiida code and the fact that one should use only functions from aiida and aiida.xxx and not deeper down). See e.g. #2357
• Most of the command line -> mention renames, changes, ...
• Dropped legacy workflows

General

Confirmed

Maybe

Hello world