Pywebview

- `New` [All] Introduce `PYWEBVIEW_GUI` environment variable and `webview.config.gui` property. Acceptable values are are `qt`, `gtk` and `win32`. `USE_QT` and `USE_WIN32` is deprecated.
- `Fix` [Cocoa] Closing main window does not result in program termination
- `Fix` [All] New main window re-creation after closing. 229
- `Fix` [QT] Debug mode 233
- `Fix` [Cocoa/Windows] Preserve JS API on page reload
- `Fix` [Windows] `toggle_fullscreen()` function 232. Thanks lt94
- `Fix` [Windows] `load_css()` function. Thanks wormius.

[QT] Fix a deadlock preventing QT implementation from starting
[QT] QT is set to default on QT-based systems

- [Windows] Yet another fix to the pip installation problem

- [Windows] Fix installation through pip

- `New` [All] Multi-window support
- `New` [All] Ability to call Python code from Javascript via `window.pywebview.api`
- `New` [All] Debug mode. Web inspector for Cocoa/GTK/QT and basic debug information for WinForms.
- `New` [All] File filter support in `create_file_dialog`
- `New` [All] `target='_blank'` links are now opened in an external browser
- `New` [All] Change window title via a `set_title` function 159
- `New` [All] `load_css` function
- `New` [All] Support for relative local URLs in `create_window` / `load_html`. Linked local resources are resolved as well. 186
- `New` [All] `todos` example app demonstrating js api and relative local URLs.
- `New` [All] Text select in the webview window is disabled by default. Added `text_select` argument to `create_window` function.
- `New` [QT] OpenBSD 6.x support 213. Thanks hucste.
- `Fix` [All] `base_uri` parameter of `load_html` defaults to the directory of the entry script
- `Fix` [All] Consistent return types with `evaluate_js` across different platforms 175
- `Fix` [All] Various concurrency issues and deadlocks
- `Fix` [Winforms] Hide `Message from webpage` when using `alert` Javascript function 150
- `Fix` [Winforms] Support for high DPI 179
- `Fix` [QT] Support for QT 5.10 171. Thanks adbenitez
- `Fix` [QT] Deprecate QT4. Starting from this verison new features won't be tested on QT4 and support will be removed in the future.

- pywebview has the official logo
- shivaprsdv is now an official maintainer of the project
- `New` [All] Add an ability to run Javascript code using `evaluate_js` function
- `Fix` [Cocoa] Implement missing webview components (file input dialog, alert()/confirm() JS functions)
- `Fix` [Winforms] Fix issue with non-responsive UI when a loading screen background color is used
- `Fix` [Winforms] Add support for Del and Ctrl+A keys in input elements.
- `New` [QT] QT5 is now prefererred over QT4
- `Fix` [QT] Fix return parameters of `create_file_dialog` to have the same format as on other platforms
- `Fix` [GTK] Better threading model. Thanks to jorants 121