Implement RealMatrix.__getitem__()

Small changes, beginning of RealMatrix

PEP 696 support for accessors

Start of "map methods"

Remove temp testing script

Rename AbstractAccessor.materialize() to AbstractAccessor.to_tuple()

Little bit of clean up

Use reference to __iter__()

Use cast() over ignore comment

Remove repr implementations for non-base accessors

Remove unnecessary overrides, use angled bracket repr

Formatting

Re-add old methods

Additional shape-only overloads for constructor, add shape properties

Complete constructor

Start of new constructor, add module import

WIP redoing builtints

Move rule module into top level

Type dimensions for accessors

Remove unnecessary Final types, more class var overrides

Override abstract properties via class variable

Update error messages

Add internal map methods

Add materialize() method, more overloads for __init__()

Rename some base accessors, add constants for 1x0 and 0x1 shapes

Rename collect() method to materialize()

Check boundaries in debug mode only

Starting from scratch

More base accessors

Designate accessors as final