Tokens transformators
feature #553 Tokens transformators (keradus)

This PR was squashed before being merged into the 1.0.x-dev branch (closes #553).

Discussion
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Tokens transformators

Proof of concept about transforming tokens (resolve #531).

- [X] add mechanism for support tokens transformation
- [X] add `CT_ARRAY_TYPEHINT` for `T_ARRAY` used as typehint (fix #542)
- [X] create `CT_CURLY_CLOSE` for `T_CURLY_OPEN`
- [X] create `CT_DOLLAR_CLOSE_CURLY_BRACES` for `T_DOLLAR_OPEN_CURLY_BRACES`

If merged then I'll create a Transformators for :
* create custom tokens for braces in syntax: `$this->{$foo}`

Commits
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5fdb0d7 Tokens transformators