Missing property declarations

[szepeviktor]

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  Line   Factories/Observers/Loader.php
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  13     Access to an undefined property Underpin\Factories\Observers\Loader::$key.
  14     Access to an undefined property Underpin\Factories\Observers\Loader::$args.
  19     Access to an undefined property Underpin\Factories\Observers\Loader::$args.
  19     Access to an undefined property Underpin\Factories\Observers\Loader::$key.
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  Line   Factories/Observers/Trigger_Exception.php
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  24     Access to an undefined property Underpin\Abstracts\Storage::$event_type.
  27     Access to an undefined property Underpin\Abstracts\Storage::$item.
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  Line   Factories/Observers/Trigger_Notice.php
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  22     Access to an undefined property Underpin\Factories\Observers\Trigger_Notice::$level.
  28     Access to an undefined property Underpin\Abstracts\Storage::$item.
  32     Access to an undefined property Underpin\Factories\Observers\Trigger_Notice::$level.
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  Line   Loaders/Logger.php
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  377    Access to protected property Underpin\Abstracts\Event_Type::$psr_level.
  382    Access to protected property Underpin\Abstracts\Event_Type::$psr_level.
  387    Access to protected property Underpin\Abstracts\Event_Type::$psr_level.
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