nuke proposal prefixes (#2604)

* nuke proposal prefixes

* Add YYYY-MM-DD prefixes to proposal documents

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

proposals/000_OAS-proposal-template.md → proposals/2019-01-01-Proposal-Template.md

@@ -5,12 +5,12 @@
 
 |Tag |Value |
 |---- | ---------------- |
-|Proposal |[NNNN](https://github.com/OAI/OpenAPI-Specification/tree/main/proposals/{directory_or_file_name})|
+|Proposal |[YYYY-MM-DD-Short-Name](https://github.com/OAI/OpenAPI-Specification/tree/main/proposals/{YYYY-MM-DD-Short-Name.md})|
 |Authors|[Author 1](https://github.com/{author1}), [Author 2](https://github.com/{author2})|
-|Review Manager |TBD |
+|Review Manager | TBD |
 |Status |Proposal, Draft, Promoted, or Abandoned|
-|Implementations |[Click Here](https://github.com/OAI/OpenAPI-Specification/tree/main/proposals/{NNNN}/implementations.md)|
-|Issues |[{issueid}](https://github.com/OAI/OpenAPI-Specification/issues/{Issueid})|
+|Implementations |[Click Here](https://github.com/OAI/OpenAPI-Specification/tree/main/proposals/{YYYY-MM-DD-Short-Name}/implementations.md)|
+|Issues |[{issueid}](https://github.com/OAI/OpenAPI-Specification/issues/{IssueId})|
 |Previous Revisions |[{revid}](https://github.com/OAI/OpenAPI-Specification/pull/{revid}) |
 
 ## Change Log

proposals/001_Alternative Schema Proposal.md → proposals/2019-03-15-Alternative-Schema.md

@@ -4,20 +4,20 @@
 
 |Tag |Value |
 |---- | ---------------- |
-|Proposal |[Alternative Schema](https://github.com/OAI/OpenAPI-Specification/tree/main/proposals/Alternative%20Schema)|
-|Authors|[Chuck Heazel](https://github.com/{cmheazel})|
+|Proposal |[Alternative Schema](https://github.com/OAI/OpenAPI-Specification/tree/main/proposals/2019-03-15-Alternative-Schema.md)|
+|Authors|[Chuck Heazel](https://github.com/cmheazel)|
 |Review Manager |TBD |
 |Status |**Draft** |
-|Implementations |[Click Here](https://github.com/OAI/OpenAPI-Specification/tree/main/proposals/Alternative%20Schema/implementations.md)
+|Implementations |[Click Here](https://github.com/OAI/OpenAPI-Specification/tree/main/proposals/Alternative-Schema/implementations.md)
 |Issues |[1532](https://github.com/OAI/OpenAPI-Specification/issues/1532)|
 |Previous Revisions |[March 15](https://github.com/OAI/OpenAPI-Specification/pull/1868#issue-261689900) |
 
 .Change Log
 
 |Date |Responsible Party |Description |
 |---- | ---------------- | ---------- |
-|3/15/19 |C. Heazel|Initial Markup Draft |
-|4/17/19 |C. Heazel|Re-structured based on Apple Swift|
+|2019-03-15 |C. Heazel|Initial Markup Draft |
+|2019-04-17 |C. Heazel|Re-structured based on Apple Swift|
 
 ## Introduction
 

proposals/002_Webhooks.md → proposals/2019-07-17-Webhooks.md

@@ -5,7 +5,7 @@
 
 |Tag |Value |
 |---- | ---------------- |
-|Proposal |[002_Webhooks](https://github.com/OAI/OpenAPI-Specification/tree/main/proposals/002_webhooks.md)|
+|Proposal |[2019-07-17-Webhooks](https://github.com/OAI/OpenAPI-Specification/tree/main/proposals/2019-07-17-Webhooks.md)|
 |Authors|[Lorna Mitchell](https://github.com/lornajane)|
 |Review Manager |TBD |
 |Status |Proposal|

proposals/003_Clarify-Nullable.md → proposals/2019-10-31-Clarify-Nullable.md

@@ -5,7 +5,7 @@
 
 |Tag |Value |
 |---- | ---------------- |
-|Proposal |[003](https://github.com/OAI/OpenAPI-Specification/tree/main/proposals/003_Clarify-Nullable.md)|
+|Proposal |[2019-10-31-Clarify-Nullable](https://github.com/OAI/OpenAPI-Specification/tree/main/proposals/2019-10-31-Clarify-Nullable.md)|
 |Authors|[Ted Epstein](https://github.com/tedepstein)|
 |Review Manager |TBD|
 |Status |Proposal|

proposals/004_Overlays.md → proposals/2019-12-24-Overlays.md

@@ -4,7 +4,7 @@
 
 |Tag |Value |
 |---- | ---------------- |
-|Proposal |[004_Overlays](https://github.com/OAI/OpenAPI-Specification/tree/main/proposals/004_overlays.md)|
+|Proposal |[2019-12-24-Overlays](https://github.com/OAI/OpenAPI-Specification/tree/main/proposals/2019-12-24-Overlays.md)|
 |Authors|[Darrel Miller](https://github.com/darrelmiller)|
 |Status |Proposal|
 |Issues |[1442](https://github.com/OAI/OpenAPI-Specification/issues/1442) [1722](https://github.com/OAI/OpenAPI-Specification/issues/1722)|

proposals/Alternative Schema/alternative_schema_object.adoc → proposals/Alternative-Schema/alternative_schema_object.md

@@ -6,11 +6,12 @@ The following text is to be inserted after the XML Object section
 
 This object makes it possible to reference an external file that contains a schema that does not follow the OAS specification. If tooling does not support the _type_, tooling MUST consider the content valid but SHOULD provide a warning that the alternative schema was not processed.
 
-==== Fixed Fields
+## Fixed Fields
 
 |Field Name | Type | Description |
 |---|:---:|---|
 |type | string | **REQUIRED**. The value MUST match one of the values identified in the alternative Schema Registry. |
 |location | url | **REQUIRED**.  This is a absolute or relative reference to an external resource containing a schema of a known type.  This reference may contain a fragment identifier to reference only a subset of an external document. |
 
 This object MAY be extended with Specification Extensions.
+