Tokens - extract common functionality
minor #360 Tokens - extract common functionality (keradus)

This PR was squashed before being merged into the 0.5.x-dev branch (closes #360).

Discussion
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Tokens - extract common functionality

Extract common functionality from classes uses token_get_all into new Tokens class, which extends \SplFixedArray.

In result Fixer classes are smaller, simpler and easier to maintenance.

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7bbc93d Tokens - extract common functionality