Updated core framework and fixed bugs.

Improvement

• Update core framework.
• Update Ad-block module.

Fixed bug

• Fix issue that bookmark folders do not open from taskbar after sometime.
• Fix issue that window.open does not work correctly.
• Fix issue that full screen mode icon is incorrect on Windows.

Fixed bug

• Fix issue that full screen mode icon is incorrect on Windows.

Improvement

• Update core framework.

Improvement

• Update core framework.
• Update Ad-block module.

Fixed bug

• Fix issue that bookmark folders do not open from taskbar after sometime.
• Fix issue that window.open does not work correctly.

Fixed bug

• Fix issue that ePub file cannot be loaded after browsing to another tab.
• Fix issue that Phoebe crashes on printing a PDF file.
• Fix issue that the full screen mode doesn't work properly.
• Fix issue that the full screen video mode did not work properly with multiple tabs.
• Fix issue that the confirm and alert dialog boxes do not work properly.

Fixed bug

• Fix issue that ePub file cannot be loaded after browsing to another tab.
• Fix issue that Phoebe crashes on printing a PDF file.

No change from the Phoebe v0.21.0-alpha2 version.

Improvement

• Update core framework.

Fixed bug

• Fix issue that the full screen mode doesn't work properly.
• Fix issue that the full screen video mode did not work properly with multiple tabs.
• Fix issue that the confirm and alert dialog boxes do not work properly.

Improvement

• Update core framework.
• Implement invalid protocol handling.
• Add error page on failing to load a website.
• Show warning favicon in error pages.

Fixed bug

• Fix issue that input cursor is invisible after navigation in webview on some websites.
• Fix issue that password setting display is broken.
• Fix issue that webpages do not stop loading sometimes.
• Fix issue that there was incorrect navigation on Windows by using 'Open in New Tab' option.