v1.2103140902

Note: Windows only release to fix issues with webview2. Full release of other features upcoming for all OS targets.

Changes:

• Upgrade to pywebview 3.4.
• Implement custom smtplib override to enable Unicode passwords.
• Updated screenshot.
• Debounce the main process emails function.
• Use ReactDOM.unstable_batchedUpdates to batch email updates.
• Use the icon from the client assets in readme.
• Tidy up docstring.