create OOP/segment.cs

create OOP/Vektor

update README.md

update README.md

Запрос на слияние 'mine_new_vetka' (#1) из mine_new_vetka в master

create README.md

update demo/artefacts.md

update demo/artefacts.md

create demo/artefacts.md

create README.md

update demo/artefacts.md

update demo/artefacts.md

create demo/artefacts.md

update spec/codex.md

update spec/codex.md

update spec/codex.md

update spec/codex.md

update spec/codex.md

update spec/codex.md

update spec/codex.md

update dev/solution.cs