init the awkward code

static/html/jspaint/CHANGELOG.md

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+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [1.0.0] - 2022-08-02
+### Added
+- `systemHooks` API for overriding file dialogs, file saving/loading, and Set as Wallpaper commands
+	- `systemHooks.showSaveFileDialog = async ({ formats, defaultFileName, defaultPath, defaultFileFormatID, getBlob, savedCallbackUnreliable, dialogTitle }) => { ... };`
+	- `systemHooks.showOpenFileDialog = async ({ formats }) => { ... };`
+	- `systemHooks.writeBlobToHandle = async (save_file_handle, blob) => { ... };`
+	- `systemHooks.readBlobFromHandle = async (file_handle) => { ... };`
+	- `systemHooks.setWallpaperTiled = (canvas) => { ... };`
+	- `systemHooks.setWallpaperCentered = (canvas) => { ... };`
+- function `undoable({ name, icon }, actionFunction)` to make an action undoable, as far is it modifies the canvas
+- function `show_error_message(message, [error])` to show an error message dialog box, optionally with expandable error details
+- function `open_from_file(blob, source_file_handle)` to load a file from a blob and file handle pair (kinda quirky API)
+- function `set_theme(theme_file_name)` to switch themes
+- function `set_language(language_code)` to switch languages, prompting the user to reload the application
+- You can use `.main-canvas` selector to access the canvas element.
+- URL parameter `#load:<URL>` to load a file from a URL
+
+[Unreleased]: https://github.com/1j01/jspaint/compare/v1.0.0...HEAD
+[1.1.0]: https://github.com/1j01/jspaint/compare/v1.0.0...v1.1.0
+[1.0.0]: https://github.com/1j01/jspaint/releases/tag/v1.0.0