v0.3.0

• Distribution systems: new powerio-dist crate for multi conductor unbalanced
  networks. Reads OpenDSS and the PowerModelsDistribution engineering JSON, and
  reads/writes the IEEE BMOPF Taskforce JSON (schema v0.0.1). First crates.io
  release of powerio-dist. thanks @frederikgeth @deakinmt @matheusduartedm
• PSS/E: read and write support for v34 and v35 alongside v33.
• GE PSLF: an .epc writer, with better interoperability between PSLF and PSS/E.
• Transformers with three or more windings.
• C ABI v4 (PIO_ABI_VERSION 4): a smaller canonical surface designed so future
  changes stay additive. Breaking ABI change in this release.
• Memory safety hardening across the readers.

What's Changed

• v0.3.0 candidate: memory safety hardening + C ABI v4 by @samtalki in #116
• PSS/E v33/v34/v35, A PSLF .epc writer, closing model gaps, and network operations toolchain by @samtalki in #130
• feat: powerio-dist, a multiconductor distribution crate with dss/PMD/BMOPF converters by @samtalki and @frederikgeth in #82
• chore(deps): update bot workflows, PyO3, Arrow/Parquet stack, and remove transitive Thrift 0.17 by dependabot in #128
• feat(dist): typed grounding reactor support by @matheusduartedm in #137
• Release: v0.3.0 by @samtalki in #133

New Contributors

• @matheusduartedm made their first contribution in #137
• @frederikgeth made their first contribution in #82
• special thanks to @deakinmt for the thorough review on #82

Full Changelog: v0.2.4...v0.3.0