v3.0.0-beta.1: v3 is now in beta

A lot has changed for this release, so please give this beta a try.

Added

• Add support for serde_json::Map
  (#163).
• Added support for specifying custom Cargo registries with CargoDependency.
• Added helpers for building CargoDependency with a git repository.

Changed

• Added MIT as an option to the project licensing.
• Replaced the rust_plugin_module and rust_wasmer_runtime_module annotations
  with a single rust_module annotation.
• Struct fields annotated with skip_serializing_if are treated as optional by
  the TypeScript binding generator.
• Struct fields generated by fp-bindgen will not automatically add any Serde
  annotations that were not there in the original protocol definition.
• CargoDependency is now marked as non-exhaustive to prevent future breaking
  changes.

Fixed

• Make sure cargo check doesn't complain about unused imports in the generated
  plugin bindings.

Removed

• BindingsType::TsRuntime, which was deprecated in 2.0.0, is now removed.