Update version to 4.3.1

Update version 4.3.0

Fix pull request activity not scrolling to initial comment

The content was being initialized twice because of callback in head reference loading. We forgot to remove this call after making head reference not required to display main content.

Bump version

Bump version

Fix logic and init value for zoom size determination.

Previous logic would throw an ArrayIndexOutOfBoundsException for new
installs.

Merge pull request slapperwan#580 from Tunous/notification-mark-fix

Mark repository as read when marking last unread notification

Fix NPE.

Only update color in task description.

Don't update label and icon, as that might be misleading if we're called
from other apps via BrowseFilter.

Fix some more reported crashes.