Fwd port v3.0.3 dev to v3.1.0 dev (#2163)

* fix typo in Callback Object

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* retain typo in v3.0.2; fix for v3.0.3 (#1899)

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Clarify empty Security Requirement Object usage and validity (#1886)

* Clarify empty Security Requirement Object usage and validity

* Reorder sentences to make clearer.

* Remove wrong text.

* Removed unneeded text.

Co-authored-by: Ron <ron@swagger.io>
Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Ron's wording for Darrels feedback

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* ted updates

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Replace 'application' by 'API' within the 'Info Object' definition. (#2004)

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Path Templating Clarification - proposed fix for #1830. (#1831)

* Proposed fix for #1830. Each variable expression in a path must have a corresponding path parameter.

* #1830 - Removed 'at least once' to defer the question about repeated references to a single path parameter.

* Update #1830 fix with suggestion from Darrel

@darrelmiller suggestions we use "template expression" instead of "variable expression" to align with RFC6570. Good idea.

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* yaml.org supports https, but www.yaml.org is misconfigured

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Updated text for OperationRef

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* fix a typo in the Security Filtering section (#1837)

* fix a typo in the Security Filtering section

* Security filtering slight reword

Co-authored-by: Mike Ralphson <mike.ralphson@gmail.com>
Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Make ABNF for runtime expressions complete

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Explain unclear semantics of property `$ref` in Path Item Object (#1964)

* Explain unclear semantics of property `$ref` in Path Item Object

Currently, as explained in #1038 (comment) the description of `$ref` in [Path Item Object](https://github.com/OAI/OpenAPI-Specification/blob/3.0.2/versions/3.0.2.md#pathItemObject) is unclear about the semantics behing it. I took the explaination from issue #1038 to make it more clear.

* Update versions/3.1.0.md

Co-authored-by: Ron <ron@swagger.io>
Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Clarify constraints on Security Scheme Object Scheme Property (#1880)

* Wording around scheme extensions

* Clarified that securitySchemeScheme is only a SHOULD be registered scheme

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* fix difference between yaml and json in Response Object Examples

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Server Variable Object clarifications (#1809)

* Server Variable Object clarifications

* Toned language down for proper semver versioning

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Fix formatting errors in example (#2132)

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Update 3.0.3 for release (#2149)

* Update README.md for release

* Update release date for 3.0.3

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Update versions/3.1.0.md

Co-Authored-By: Darrel <darrmi@microsoft.com>
Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Fixed typo

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* explicit 'forward slash'

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* fix #2053: `style` keyword is not supported inside Schema object

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* OpenAPI not Open API

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* backticks

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* minor clarification for operationId usage in link objects (#1733)

* minor clarification

it's a bit confusing that both the id and the reference are called "operationId", so this tweak makes the text a bit more explicit.

* use right terminology

Co-Authored-By: Mike Ralphson <mike.ralphson@gmail.com>

Co-authored-by: Ron <ron@swagger.io>
Co-authored-by: Mike Ralphson <mike.ralphson@gmail.com>
Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Update 3.1.0.md

fixed typo

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Removed confusing comment

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Clarify the spec to allow optional or unspecified OAuth scopes (#1888)

* Referencing issue #513. Clarify the spec to accommodate OAuth schemes where scope may be unspecified (optional scope) or where scope is not used at all.

* Removed the provision for default scope represented as empty string. This introduces some ambiguities in the Security Requirement Object that would need to be addressed.

* For #513, adjusting language and removing examples

For #513, adjusting language and removing examples as suggested by @webron.

* removed unnecessary example header

Co-authored-by: Ron <ron@swagger.io>
Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* The examples keyword is not supported inside schema (#2042)

* examples not supported inside schema

* figured it out

* a tiny little edit

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Fix 'Security Scheme Object' definition with OAuth 2.0 grant types. (#2006)

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

* Fix formatting errors in example (#2132)

Signed-off-by: Mike Ralphson <mike.ralphson@gmail.com>

Co-authored-by: seiya <r108338@yahoo.co.jp>
Co-authored-by: Adam Leventhal <ahl@transposit.com>
Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>
Co-authored-by: Ron <ron@swagger.io>
Co-authored-by: Phil Sturgeon <me@philsturgeon.uk>
Co-authored-by: Patrice Krakow <patrice.krakow@gmail.com>
Co-authored-by: Ted Epstein <ted.epstein@reprezen.com>
Co-authored-by: Darrel Miller <darrmi@microsoft.com>
Co-authored-by: Carsten Brandt <mail@cebe.cc>
Co-authored-by: Henry Andrews <andrews_henry@yahoo.com>
Co-authored-by: Sergej <sergej2705@users.noreply.github.com>
Co-authored-by: nasa9084 <nasa.9084.bassclarinet@gmail.com>
Co-authored-by: Erik Wilde <dret@users.noreply.github.com>