Belvys

What's Changed
* initial commit by rwijtvliet in https://github.com/rwijtvliet/belvys/pull/10


**Full Changelog**: https://github.com/rwijtvliet/belvys/compare/0.2.2...0.2.3

What's Changed
* Fix docs issue by rwijtvliet in https://github.com/rwijtvliet/belvys/pull/9

**Full Changelog**: https://github.com/rwijtvliet/belvys/compare/0.2.1...0.2.2

What's Changed
* More descriptive error messages
* Frozen `Structure`
* `__slots__` for `Api`

**Full Changelog**: https://github.com/rwijtvliet/belvys/compare/0.2.0...0.2.1

What's Changed
* updated to use portfolyo version 0.5.x
* made all revenue pflines to complete ones by rwijtvliet in https://github.com/rwijtvliet/belvys/pull/7

**Full Changelog**: https://github.com/rwijtvliet/belvys/compare/0.1.4...0.2.0

better error message if query fails
**Full Changelog**: https://github.com/rwijtvliet/belvys/compare/0.1.3...0.1.4

- suppress warnings for conversion to pint-series

**Full Changelog**: https://github.com/rwijtvliet/belvys/compare/0.1.2...0.1.3