Update 4

Bug fixes.
Update 4

Improved reliability of EasyList updates.

Privatized Blacklist/Whitelist.

Begin support for kept/unkept snapshots.

Setting the caption for a menu command now strictly enforces the script name to be prepended. This will now happen even if messageExtension is used directly.

No longer remove injected scripts from the page once they are executed. This resolves some issues with websites such as the SEN store.