Improved aggregation of RAML fragments

The gradle plugin has been rewritten to cater for improved aggregation of RAML Fragments:

• resources that are documented multiple times will result in multiple examples in the aggregated RAML (for RAML 1.0) and also a merged JSON schema
• fix aggregation of resources with same path and method but different content-type

Refactor gradle plugin from groovy to kotlin

Refactor gradle plugin from groovy to kotlin. Also use SnakeYaml to process raml fragments and write aggregated RAML files.

gradle plugin enhancements

• use separatePublicApi to get a second RAML file generated that contains only the public resources
• use type instead of schema for RAML 1.0

initial release

0.1.0

Release version: 0.1.0