Version 4.0.0 release.

.gitignore

@@ -6,7 +6,10 @@
 /bjam
 /b2.exe
 /bjam.exe
-/bin
+/.build
 /bootstrap.log
 /test/test_results.txt
 /project-config.jam
+/src/engine/b2
+/src/engine/b2.exe
+infer-out

.vscode/launch.json

@@ -0,0 +1,20 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "(lldb) Launch",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/src/engine/b2",
+            "args": ["-sBOOST_BUILD_PATH=${workspaceFolder}" "toolset=clang"],
+            "stopAtEntry": true,
+            "cwd": "${workspaceFolder}/test",
+            "environment": [],
+            "externalConsole": true,
+            "MIMode": "lldb"
+        },
+    ]
+}

.vscode/tasks.json

@@ -0,0 +1,64 @@
+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "B2 Engine Build",
+            "type": "shell",
+            "windows": {
+                "command": "build.bat"
+            },
+            "osx": {
+                "command": "./build.sh"
+            },
+            "linux": {
+                "command": "./build.sh"
+            },
+            "options": {
+                "cwd": "src/engine"
+            },
+            "problemMatcher": {
+                "owner": "cpptools",
+                "fileLocation": [
+                    "relative",
+                    "${workspaceFolder}/src/engine"
+                ],
+                "pattern": {
+                    "regexp": "^(.*):(\\d+):(\\d+):\\s+(warning|error):\\s+(.*)$",
+                    "file": 1,
+                    "line": 2,
+                    "column": 3,
+                    "severity": 4,
+                    "message": 5
+                }
+            },
+            "group": "build"
+        },
+        {
+            "label": "B2 Engine Infer",
+            "type": "shell",
+            "osx": {
+                "command": "CXX='infer run -- clang++' ./build.sh clang"
+            },
+            "options": {
+                "cwd": "src/engine"
+            },
+            "problemMatcher": {
+                "owner": "cpptools",
+                "fileLocation": [
+                    "relative",
+                    "${workspaceFolder}/src/engine"
+                ],
+                "pattern": {
+                    "regexp": "^(.*):(\\d+):(\\d+):\\s+(warning|error):\\s+(.*)$",
+                    "file": 1,
+                    "line": 2,
+                    "column": 3,
+                    "severity": 4,
+                    "message": 5
+                }
+            }
+        }
+    ]
+}