v0.2.2

• Display API: parse_display_file / parse_display_bytes read display
  artifacts separately from network cases. PowerWorld .pwd returns
  DisplayData::PowerWorld(PwdDisplay) in Rust and
  DisplayData("powerworld", PwdDisplay(...)) in Python. parse_file
  remains Network only and points .pwd callers at the display API.
• PowerWorld AUX: name keyed complete case exports can resolve
  BusName_NomVolt labels for loads, shunts, generators, and branches.
• PSS/E: the reader accepts comment headers, system wide records before
  BEGIN BUS DATA, and v34 named branch records without misclassifying
  long v33 branch rows.
• MCP: add dedicated tools for PyPSA CSV folders and gridfm Parquet datasets.
• DC sensitivities: PTDF/LODF fall back to dense Gaussian elimination for
  invertible indefinite grounded Laplacians.

What's Changed

• feat(mcp): add PyPSA CSV folder and gridfm Parquet read/write tools by @qian-harvard in #119
• ci: notify PowerIO.jl on release publish by @samtalki in #118
• feat: Add display parsing API by @samtalki in #120

Full Changelog: v0.2.1...v0.2.2