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
add findOrNew eloquent method
added tests for findOrNew
move swiftMailer registration into closure

Signed-off-by: Suhayb El Wardany <me@suw.me>
Merge pull request #4029 from suwardany/mail-config-overrides

Email config overriding issue with artisan.
Add a space.
Merge pull request #3875 from yajra/findOrNew

[Proposal] add findOrNew eloquent method
remove find, findOrFail from model, delegate to query builder
use model->newCollection
Throw exception when no primary key and deleting.
Fix in and not_in.
Turn the count into an expression.
Remove the count.
Merge pull request #3414 from ebollens/minor_fixes

Minor Clarity and Type-enforcement Fixes
Fix expression.
Removed 3 unused imports
Merge pull request #4045 from GrahamCampbell/4.1-imports

[4.1] Removed 3 Unused Imports
Merge pull request #3831 from alprs/refct/find-findorfail

Remove find, findOrFail from model, delegate to query builder
Remove unused app variables from the tests
Merge pull request #4047 from GrahamCampbell/4.1-unusedapp

[4.1] [Minor] Micro-Optimisation In Tests