Minor clarity and type-enforcement fixes

Fix Cache\TagSet::__construct() arg for prop used with array-only operations

Add phpdoc @method hints for \Cache\Manager->__call to StoreInterface driver

Remove unused assignment in SqlServerGrammar->compileAnsiOffset()

Remove unused param from Query\Builder->orWhereBetween()

Remove unused closure parameter in Connection->unprepared()

Fix Database\Capsule\Manager method arg types

Add explicit member var definition in Database\Capsule\Manager

Fix Database\Connectors\ConnectionFactory method property type

Clean up tabs and erroneous magic reference in Cache\CacheManager

Change visibility of  in Cookie\Queue

Mark formerly implicit members as protected per #3414
Merge pull request #3414 from ebollens/minor_fixes

Minor Clarity and Type-enforcement Fixes