PHP 7.1 Support

Merge pull request #75 from hboomsma/feature/php71_compat

Feature/php71 compat

3.0.3: Merge pull request #77 from Soullivaneuh/example-to-string

Fix missing Example::__toString method

3.0.2: Merge pull request #73 from hboomsma/feature/typed-array

Allow typed arrays in @method annotation.

2.0.5: Merge pull request #67 from mbed67/fix-bug-in-collection

fix for bug #1672 in phpDocumentor2