Changes in version 0.99.3                        

  - Initial public release.
  - Provides excel template for filling in submission data
  - Implements the core workflow:
      - default_parser() – Parses submission data from excel template
      - create_client() - Creates API client based on specification
      - new_submission() – Submits parsed data to EGA through created
        API client
  - Provides methods for data validation default_validator()
  - Includes vignette for basic usage