Change `ParameterData#getJavadoc` to return a list of strings

[sciwhiz12]

Currently, MappingDataContainer.ParameterData#getJavadoc returns a single String. This precludes the possibility of multi-line javadocs for parameters, which is certainly possible both by javadoc and Enigma, the current mapping interface tool used by Parchment.

I plan to change that method to return a List<String> instead, to support the possibility of multi-line javadocs for parameters officially. This has the following consequences:

• The change in the API interface is a breaking API change and will lead to a bump of Feather's version from 1.0.1 to 2.0.0.

• The JSON format of the Mapping Data Container specification will be updated to update the javadoc key for parameters from a string to an array of strings. This necessitates a bump in the format version from the current 1.0.0 to 2.0.0.

• The parsers and writers for the MDC format (in the io-gson and io-moshi subprojects) will be updated to support 2.0.0 of the MDC JSON format, consistent with the change in interface and Feather version.

  • Support will be added to allow reading the v1.0.0 MDC format. This will likely be a default enabled option in the current parsers.

• Developers which use Feather will be informed of the breaking change sometime before Parchment exports are produced with the new format, giving them a period to update their applications to use the new Feather version and test compatibility. Consumers of their applications also need to be informed to update.

I will also look over the codebase for any API-breaking changes which can get rolled into the 2.0.0 version update.

[NebelNidas]

Why not take the Tiny v2 route and simply embed an escaped line break into the single string?