Release v0.13.4

Release v0.13.4

This release was manually triggered.

What's Changed

• Enhance sgen support for distribution parameters and classes by @bruno-f-cruz in #218
• Add json-extension to DataTypes schema by @bruno-f-cruz in #217
• Add message protocol sgen namespace by @bruno-f-cruz in #219
• Improve sgen_typename namespace and class name inference by @bruno-f-cruz in #220
• Fix issue with the generation of boolean literal fields by @bruno-f-cruz in #221
• Ensure x-sgen-namespace is generated inline with class definition by @bruno-f-cruz in #222

Full Changelog: v0.13.3...v0.13.4