* Minor changes to 2.1 templates to make them work or improve documentation
* Support for ASP.NET Core 3.0 and 3.1
* Update aspnetcore test scripts and results
* Update generated documentation
* update doc
* Update modules/openapi-generator/src/main/resources/aspnetcore/3.0/Startup.mustache
Co-Authored-By: Tatsuro Shibamura <me@shibayan.jp>
* Update modules/openapi-generator/src/main/resources/aspnetcore/3.0/Startup.mustache
Co-Authored-By: Tatsuro Shibamura <me@shibayan.jp>
Co-authored-by: William Cheng <wing328hk@gmail.com>
Co-authored-by: Tatsuro Shibamura <me@shibayan.jp>