Higlass-schema

What's Changed
* Set `exclude_none=True` for deprecated dict/json methods by manzt in https://github.com/higlass/higlass-schema/pull/19


**Full Changelog**: https://github.com/higlass/higlass-schema/compare/v0.2.0...v0.2.1

What's Changed
* Pydantic V2 migration by nvictus in https://github.com/higlass/higlass-schema/pull/16
* Tidy up JSON schema generation by manzt in https://github.com/higlass/higlass-schema/pull/17

New Contributors
* nvictus made their first contribution in https://github.com/higlass/higlass-schema/pull/16

**Full Changelog**: https://github.com/higlass/higlass-schema/compare/v0.1.0...v0.2.0

   🚀 Features

- Drop support for Python 3.7 &nbsp;-&nbsp; by manzt in https://github.com/higlass/higlass-schema/issues/10 [<samp>(28fa8)</samp>](https://github.com/higlass/higlass-schema/commit/28fa813)

&nbsp;&nbsp;&nbsp;&nbsp;[View changes on GitHub](https://github.com/higlass/higlass-schema/compare/v0.0.6...v0.1.0)