openEO API v0.4.2

Changed

• Updated the process catalog, see the separate changelog.

Added

• Basic JSON Schema for process graph validation.

Removed

• Disallowed CommonMark in descriptions of process graph variables and process graph nodes.

Fixed

• Improved documentation with several clarifications, better examples and more.
• SAR Bands had a required but undefined property. #187
• Clarified how file paths in the URL must be encoded for file handling.
• OpenAPI nullable issues:
  • Removed null from SAR Bands enum for OpenAPI code generator, is handled by nullable. OpenAPI-Specification#1900
  • nullable doesn't combine well with anyOf, allOf and oneOf, therefore placed nullable also in one of the sub-schemas. OpenAPI-Specification#1368