Improve GitHub templates and VSCode config (#590)

docs/ISSUE_TEMPLATE.md → .github/ISSUE_TEMPLATE/bug-report.md

@@ -14,8 +14,6 @@ having problems with any component that is not the STL, instructions to get
 to the right place are there.
 
 **Command-line test case**
-STL version (git commit or Visual Studio version):
-
 ```
 C:\Temp>type repro.cpp
 #include <iostream>
@@ -44,9 +42,24 @@ test failure
 ```
 
 **Expected behavior**
-A clear and concise description of what you expected to happen. Alternatively,
-include `static_assert`s or `assert`s in your test case above whose failure
-clearly indicates the problem.
+A clear and concise description of what you expected to happen.
+Alternatively, include `static_assert` or `assert` lines in your
+test case above whose failure clearly indicates the problem.
+
+**STL version**
+* Option 1: Visual Studio version
+  * Displayed in Help > About Microsoft Visual Studio
+  * Example:
+    ```
+    Microsoft Visual Studio Community 2019 Preview
+    Version 16.5.0 Preview 5.0
+    ```
+
+* Option 2: git commit hash
+  * Example:
+    ```
+    https://github.com/microsoft/STL/commit/2195148
+    ```
 
 **Additional context**
 Add any other context about the problem here.

.github/ISSUE_TEMPLATE/cxx20-feature.md

@@ -0,0 +1,24 @@
+---
+name: cxx20 Feature
+about: For STL maintainers only
+title: PAPER_NUMBER PAPER_TITLE
+labels: cxx20
+assignees: ''
+
+---
+
+**NOTE**
+This issue template is for STL maintainers only.
+Please use the Bug Report issue template instead.
+
+
+[PAPER_NUMBER](https://wg21.link/PAPER_NUMBER) PAPER_TITLE
+
+Note: If this link appears to be broken, don't worry! Papers are often
+revised during a WG21 meeting before the final vote. When that happens,
+there's a delay of a few weeks between the end of the meeting
+and the publication of the papers. When the papers are available,
+the https://wg21.link redirector will start working.
+
+Feature-test macro:
+`#define MACRO_NAME MACRO_VALUE`

docs/pull_request_template.md → .github/pull_request_template.md

@@ -1,8 +1,10 @@
-# Description
+Description
+===========
 
 
 
-# Checklist
+Checklist
+=========
 
 Be sure you've read README.md and understand the scope of this repo.
 

.vscode/settings.json

@@ -1,8 +1,10 @@
 // Copyright (c) Microsoft Corporation.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 {
+    "C_Cpp.autoAddFileAssociations": false,
     "editor.formatOnSave": true,
     "files.associations": {
+        ".clang-format": "yaml",
         "**/stl/inc/**": "cpp"
     },
     "files.eol": "\r\n",