* Financial: principle -> principal The originally invested amount of money: `principal` -- https://www.grammarly.com/blog/principle-principal/ * updating DIRECTORY.md Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
* feat: creates math calculations for financials * refactor: make pull request items requirements * refactor: provides type hint for parameters * refactor: applies code review suggestions * refactor: adds more examples tests * refactor: throws ValueError instead of Exception * refactor: fix formatting * refactor: fix formatting * Update interest.py * Update and rename financials/ABOUT.md to financial/ABOUT.md * Rename financials/__init__.py to financial/__init__.py * Rename financials/interest.py to financial/interest.py * https://www.investopedia.com * Update __init__.py * pre-commit: Disable end-of-file-fixer * Revert change to pre-commit * Update __init__.py * __init__.py Co-authored-by: Christian Clauss <cclauss@me.com> Co-authored-by: John Law <johnlaw.po@gmail.com>
