NOTICE: Upcoming style change -- no more AoTs

[hukkin]

When toml-lang/toml#904 goes into a TOML spec release I plan to tweak Tomli-W's formatting by reverting the changes that make it write "arrays of tables", starting with PR #15. Instead I plan to write "multi line inline tables" when there is a table within an array.

This should:

• simplify the code
• reduce inspection of input data, increasing performance
• result in style that is easier to understand
• avoid non-uniform input reported here Short dict/table values don't get written as inline tables #35 (comment)

[hukkin]

Note to self: Consider #25 for both arrays and inline tables together with this change.

[hukkin]

Another note to self: This change shouldn't be made in this package until:

• tomllib standard library implements a TOML spec that includes "multi line inline tables"
• EOL date of last Python version that doesn't support the new spec

So very far in the future.