WIP editor_engine.rs and editor_buffer.rs

Caret
  - Add TWCommand to show & set caret (GlobalCursor)
  - Add support for LocalPaintedEffect caret
TWCommandQueue
  - add macro to make it easy to join and drop other queues into one
Position
  - add methods to check for bounds when adding rows and cols
Unicode
  - Vec<GraphemeClusterSegment> to / from String
Debug
  - Add GetSize derive macro for various structs
Testing
  - Add tests for editor buffer & engine
  - No such thing as visible for testing in integration tests
Ergonomics
  - Add better macro for debug: call_if_debug_true!
Documentation
  - Better code examples for macros

Here's the design doc for this feature:
- #23
- #30

.gitignore

@@ -3,3 +3,4 @@ Cargo.lock
 **/target
 docs/*.bkp
 docs/*.dtmp
+.idea

.vscode/bookmarks.json

@@ -0,0 +1,34 @@
+{
+	"files": [
+		{
+			"path": "src/tui/crossterm_helpers/tw_command.rs",
+			"bookmarks": [
+				{
+					"line": 319,
+					"column": 4,
+					"label": ""
+				},
+				{
+					"line": 326,
+					"column": 4,
+					"label": ""
+				},
+				{
+					"line": 486,
+					"column": 8,
+					"label": ""
+				}
+			]
+		},
+		{
+			"path": "src/tui/terminal_window/main_event_loop.rs",
+			"bookmarks": [
+				{
+					"line": 231,
+					"column": 6,
+					"label": ""
+				}
+			]
+		}
+	]
+}

.vscode/settings.json

@@ -15,7 +15,11 @@
     "dialup",
     "dimens",
     "drawio",
+    "editorbuffer",
+    "editorcomponent",
+    "editorengine",
     "enumflags",
+    "globalcursor",
     "idents",
     "InputEvent",
     "insertanchor",
@@ -24,9 +28,11 @@
     "keyb",
     "keyevent",
     "Keypress",
+    "keypresses",
     "lazyfield",
     "lazymemovalues",
     "litint",
+    "localpaintedeffect",
     "middlewares",
     "neovim",
     "notcurses",