Ploomber

- Simplifies installation
- Deletes BashCommand, use ShellScript
- More examples added
- Refactored env module
- Renames SQLStore to SourceLoader
- Improvements to SQLStore
- Improved documentation
- Renamed PostgresCopy to PostgresCopyFrom
- SQLUpload and PostgresCopy have now the same API
- A few fixes to PostgresCopy ([1](https://github.com/ploomber/ploomber/issues/1), [#2](https://github.com/ploomber/ploomber/issues/2))

- First release


CHANGELOG

- [2023-04-25] Delete old `cd.md` in favor of `ops.md` since the workflow wasn't implemented