While FUTURE.rst gives our current roadmap, this file PAST.rst
looks the other way for what we have accomplished when compared to what _was_ planned in FUTURE.rst
While this is also listed in CHANGES.rst, here we extract that to
make it easier to see the bigger picture without the details that are
in CHANGES.rst.
A fair bit of code refactoring has gone on so that we might be able to scale the code, get it to be more performant, and more in line with other interpreters. There is Greater use of Symbols as opposed to strings.
The builtin Functions have been organized into grouping akind to what is found in WMA. This is not just for documentation purposes, but it better modularizes the code and keep the modules smaller while suggesting where functions below as we scale.
Image Routines have been gone over.
A number of Built-in functions that were implemented were not accessible for various reasons.
Mathics3 Modules are better integrated into the documentation.
Existing Mathics3 modules pymathics.graph and pymathics.natlang have
had a major overhaul, although more is needed. And will continue after th 6.0.0 release
We have gradually been rolling in more Python type annotations and
current Python practices such as using isort, black and flake8.
While some work on formatting is done has been made and the change in API reflects a little of this. However a lot more work needs to be done.
This has improved a slight bit, but not because it has been a focus, but rather because in going over the code organization, we are doing this less dumb, e.g. using Symbols more where symbols are intended. Or fixing bugs like resetting mpmath numeric precision on operations that need to change it temporarily.
A number of items here remain, but should not be thought as independent items, but instead part of "Forms, Boxing and Formatting".
"Making StandardOutput of polynomials match WMA" is really are Forms, Boxing and Formatting issue; "Working on Jupyter integrations" is also very dependent this.
So the next major refactor will be on Forms, Boxing and Formatting.