v0.8.0

Features

• Added "double" and "string" as type aliases in the OpenMDAO type map,
  mapping them to float and str respectively, to match common proto type
  name conventions.
• Added dynamic shapes for inputs and outputs. Disciplines can now
  declare variables with dynamic_shape=True in add_input /
  add_output, indicating that the client is allowed to set the
  variable's shape at runtime. A new SetVariableShapes gRPC RPC
  lets clients send resolved shapes after querying variable definitions.
  The OpenMDAO bindings automatically map dynamic-shape variables to
  shape_by_conn=True and send resolved shapes back to the server
  (MDO-Standards/Philote#6).
• Added support for struct (dict) options via the new kStruct DataType enum
  value, enabling complex nested data to be declared and passed as discipline
  options (#49).
• Added discrete variable support throughout the stack. Disciplines can
  now declare discrete inputs/outputs via add_discrete_input /
  add_discrete_output. Discrete data is serialized as
  google.protobuf.Value (supporting scalars, lists, and nested
  structures) and multiplexed alongside continuous Array chunks in
  the new VariableMessage wrapper. The OpenMDAO bindings
  (RemoteExplicitComponent, RemoteImplicitComponent) automatically
  discover and forward discrete variables.
• Added comprehensive input validation and error handling across the
  framework. Introduces custom exception classes (PhiloteValidationError,
  PhiloteServerError), parameter validation in discipline base classes
  (add_input, add_output, add_option, declare_partials), proper
  gRPC error propagation via context.abort() with appropriate status
  codes in all server RPC methods, and client-side input validation with
  gRPC error wrapping (#46).

Bug Fixes

• Fixed bare except to except ImportError in examples/__init__.py.
• Fixed missing space in RemoteImplicitComponent error message
  ("will notbe" -> "will not be").
• Fixed SellarMDA promoted-input ambiguity that newer OpenMDAO releases
  reject during final_setup. The x and z defaults were being set on
  the inner cycle subgroup, but obj_cmp promoted the same variables
  to the top level with different defaults. Moved the set_input_defaults
  calls to the top-level SellarMDA group so the promoted values agree.
• Updated test_implicit_discipline_apply_linear_not_implemented to call
  apply_linear with its current six-argument signature (inputs,
  outputs, d_inputs, d_outputs, d_residuals, mode); the stale
  three-argument call raised TypeError before the NotImplementedError
  assertion could fire.

Documentation & Infrastructure

• Added Codecov configuration (codecov.yml) requiring 95% coverage on
  both project total and patch (new/changed lines).
• Added fail_under = 95 to .coveragerc for local coverage enforcement.
• Marked unreachable import guards and defensive branches with
  pragma: no cover.
• Updated installation instructions to reflect PyPI install option.
• Added documentation for implicit disciplines.
• Added documentation for OpenMDAO clients
• Added documentation for the OpenMDOA subproblem discipline.
• Migrated documentation from Jupyter Book to Docusaurus, mirroring the
  Delphi docs setup (dark-mode theme, KaTeX math, custom landing page,
  versioned docs).
• Replaced the Jupyter Book gh-pages deploy job with a Docusaurus
  GitHub Pages artifact pipeline triggered on develop for docs/**.
• Added a Release GitHub Actions workflow mirroring Delphi's release
  flow: PR-label-driven version bumps, signed commits, pyproject.toml
  version update, CHANGELOG rewrite, Docusaurus version snapshots on
  stable releases, GitHub Release creation, and auto-merge of main
  back to develop.
• Reformatted CHANGELOG.md to the Keep a Changelog convention so the
  release workflow can drive header rewrites and comparison links.