3.0.21 release of swagger-codegen with OpenAPI 3 support.

Supported V3 generators

• go (new, experimental)

• typescript-fetch (new, experimental)

• r (new, experimental)

• swift5 (experimental)

• javascript (experimental)

• micronaut (experimental)

• go-server (experimental)

• akka-scala (experimental)

• nodejs (updated)

• dynamic-html

• html

• html2

• java

• jaxrs-cxf-client

• jaxrs-cxf

• inflector

• jaxrs-cxf-cdi

• jaxrs-spec

• jaxrs-jersey

• jaxrs-di

• jaxrs-resteasy-eap

• jaxrs-resteasy

• spring

• openapi

• openapi-yaml

• kotlin-client

• kotlin-server

• php

• swift3

• swift4

• typescript-angular

• scala

• aspnetcore

• csharp

• csharp-dotnet2 (DEPRECATED)

• python

• python-flask (experimental)

Notable changes:

• fix help command format 3.0 (#10386)
• added method to verify alias models in generators. (#10379)
• Fix getHasQueryParams to take authMethods into account (#10261)
• Bezineb5 patch 1 (#10358)
• override specific templates (#10348)
• Fix details about template engine and location (#10346)
• refs #6260 - Fix #6260 on 3.0.0 by preventing parallelism (#10344)
• updated python sample (#10328)
• fix for security header html2 generator (#10327)
• test for invalid model name in html2 genetator (#10317)
• New samples (#10298)
• Tests for notNullJacksonAnnotation in 3.0.0 (#10268)
• test for OneOf properties missing issue (#9849)
• [Micronaut] Change class to interface in api.mustache file and add unit tests (swagger-codegen-generators PR 727)
• override method to verify alias classes. (swagger-codegen-generators PR 726)
• Fixes #722 (swagger-codegen-generators PR 723)
• Updating kotlin version and updating dependency (swagger-codegen-generators PR 720)
• added option to write csproj file on output code (swagger-codegen-generators PR 718)
• fix and test for parameter order issue in spring generator (swagger-codegen-generators PR 714)
• added option to throw error instead return null for unknown enum values (swagger-codegen-generators PR 713)
• create a specific var for custom template and update generators (swagger-codegen-generators PR 710)
• added method for custom templates (swagger-codegen-generators PR 706)
• handle content schema in parameter objects (swagger-codegen-generators PR 705)
• handle parent type mapping (swagger-codegen-generators PR 704)
• added logback xml config file (swagger-codegen-generators PR 703)
• Fix for issue HTML2 Bearer Auth Header (swagger-codegen-generators PR 702)
• Python Tests Fixing (swagger-codegen-generators PR 701)
• Issue 649 (swagger-codegen-generators PR 699)
• fix for invalid model name in html2 genetator (swagger-codegen-generators PR 698)
• fixed npe (swagger-codegen-generators PR 695)
• New generators tweaks (swagger-codegen-generators PR 694)
• NotNullJacksonAnnotation option (swagger-codegen-generators PR 690)
• added option to skip support files on micronaut generator (swagger-codegen-generators PR 689)
• detect property with same name but different types between base class… (swagger-codegen-generators PR 685)