chore(release/hugr-py-0.2.0a1): release hugr-py 0.2.0-pre

[doug-q]

🤖 I have created a release beep boop

0.2.0-pre (2024-05-10)

⚠ BREAKING CHANGES

• serialisation format
• serialisation schema
• serialisation schema (#968)
• bring back Value (#967)

Features

• Add LoadFunction node (#947) (81e9602)
• bring back Value (#967) (0c354b6)
• Encoder metadata in serialized hugr (#955) (0a44d48)
• Update serialisation schema, implement CustomConst serialisation (#1005) (c45e6fc)

Bug Fixes

• input_port_types and other helper functions on pydantic schema (#958) (8651839)
• Remove insert_port_types for LoadFunction (#993) (acca7bf)
• serialisation fixes (#997) (9ce6e49)
• serialisation schema (#968) (d913f40)
• Set default value for Conditional.sum_rows (#934) (d69198e)

Tests

• test roundtrip serialisation against strict + lax schema (#982) (954b2cb)

---

This PR was generated with Release Please. See documentation.