docs: clean up unreleased changelog section for v3.0.0 #657

Job	Run time
PR title check	3s
Tests / Integration tests (3.14, ubuntu-latest)	2m 24s
Tests / Integration tests (3.11, ubuntu-latest)	2m 18s
Code checks / Spell check	7s
Code checks / Actions lint check	36s
Package check / Package check	13s
Doc checks / Doc checks / Docs check	1m 17s
Docstrings checks / Docstrings checks	15s
Code checks / Type check / Type check (3.12)	13s
Code checks / Type check / Type check (3.14)	10s
Code checks / Type check / Type check (3.13)	11s
Code checks / Lint check / Lint check (3.12)	14s
Code checks / Type check / Type check (3.11)	13s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	1m 55s
Code checks / Lint check / Lint check (3.13)	13s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	1m 13s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	46s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	44s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	49s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	1m 12s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	47s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	1m 5s
Code checks / Lint check / Lint check (3.14)	14s
Code checks / Lint check / Lint check (3.11)	12s
	17m 24s

Provide feedback