Update lib and binary definition in cargo.toml

Update README.md

Update README.md

Update README.md

Merge branch 'master' of https://github.com/HasinZaman/DataBaseManager

Merge pull request #1 from HasinZaman/add-license-1

Create LICENSE.md

Update data_base.rs

Update .gitignore

Added command stack for inputs

Added benchmark

Update main.rs

Update relation_page.rs

Views selections don't crash

Update .gitignore